Top 100 BJT Words: IT, Systems & Online Work (Part 14)
Modern Japanese workplaces rely on IT. This list covers BJT vocabulary for devices, software and data, networks and security, online meetings and remote work, and system introduction and operation. You will hear these words in IT support, online meetings and system announcements.
Tap the info icon next to any word to see its meaning, how it is used, and 6 example sentences with hiragana and romaji.
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1. Computers & Devices
| No. | Meaning | Japanese | Hiragana | Romaji | Examples |
|---|---|---|---|---|---|
| 1 | Device, terminal | 端末 | たんまつ | tanmatsu | |
| 2 | Peripheral device | 周辺機器 | しゅうへんきき | shuuhen kiki | |
| 3 | Charging (a battery) | 充電 | じゅうでん | juuden | |
| 4 | Restart, reboot | 再起動 | さいきどう | saikidou | |
| 5 | Power (supply, switch) | 電源 | でんげん | dengen | |
| 6 | Startup, launch | 起動 | きどう | kidou | |
| 7 | Screen | 画面 | がめん | gamen | |
| 8 | Tablet (device) | タブレット | たぶれっと | taburetto | |
| 9 | Smartphone | スマートフォン | すまーとふぉん | sumaatofon | |
| 10 | Keyboard | キーボード | きーぼーど | kiiboodo | |
| 11 | Monitor, display | モニター | もにたー | monitaa | |
| 12 | Breakdown, malfunction | 故障 | こしょう | koshou | |
| 13 | Operation, handling (by a user) | 操作 | そうさ | sousa | |
| 14 | Capacity, storage space, file size | 容量 | ようりょう | youryou | |
| 15 | Performance, capability | 性能 | せいのう | seinou | |
| 16 | Lending, issuing (company equipment) | 貸与 | たいよ | taiyo | |
| 17 | External (attached device) | 外付け | そとづけ | sotozuke | |
| 18 | Mouse (computer) | マウス | まうす | mausu | |
| 19 | Dead battery | 電池切れ | でんちぎれ | denchigire | |
| 20 | Operation, behavior (of a machine or program) | 動作 | どうさ | dousa |
2. Software, Data & Files
| No. | Meaning | Japanese | Hiragana | Romaji | Examples |
|---|---|---|---|---|---|
| 21 | App, application | アプリ | あぷり | apuri | |
| 22 | Software | ソフトウェア | そふとうぇあ | sofutowea | |
| 23 | Installation, to install | インストール | いんすとーる | insutooru | |
| 24 | Backup | バックアップ | ばっくあっぷ | bakkuappu | |
| 25 | Compression (of files) | 圧縮 | あっしゅく | asshuku | |
| 26 | Unzipping, extracting (files) | 解凍 | かいとう | kaitou | |
| 27 | Shared folder | 共有フォルダ | きょうゆうふぉるだ | kyouyuu foruda | |
| 28 | Database | データベース | でーたべーす | deetabeesu | |
| 29 | Overwriting, overwrite | 上書き | うわがき | uwagaki | |
| 30 | File extension | 拡張子 | かくちょうし | kakuchoushi | |
| 31 | Restoration (of data) | 復元 | ふくげん | fukugen | |
| 32 | Update (software) | アップデート | あっぷでーと | appudeeto | |
| 33 | Version | バージョン | ばーじょん | baajon | |
| 34 | Compatibility | 互換性 | ごかんせい | gokansei | |
| 35 | Garbled characters | 文字化け | もじばけ | mojibake | |
| 36 | Spreadsheet software | 表計算ソフト | ひょうけいさんそふと | hyoukeisan sofuto | |
| 37 | Shortcut | ショートカット | しょーとかっと | shootokatto | |
| 38 | Migration, transition (of data or systems) | 移行 | いこう | ikou | |
| 39 | Damage, corruption (of files) | 破損 | はそん | hason | |
| 40 | Viewing, browsing (documents or data) | 閲覧 | えつらん | etsuran |
3. Network & Security
| No. | Meaning | Japanese | Hiragana | Romaji | Examples |
|---|---|---|---|---|---|
| 41 | Line, connection (network or phone) | 回線 | かいせん | kaisen | |
| 42 | Connection | 接続 | せつぞく | setsuzoku | |
| 43 | Password | パスワード | ぱすわーど | pasuwaado | |
| 44 | Information leak, data leak | 情報漏えい | じょうほうろうえい | jouhou rouei | |
| 45 | (Computer) virus | ウイルス | ういるす | uirusu | |
| 46 | Encryption | 暗号化 | あんごうか | angouka | |
| 47 | Personal information | 個人情報 | こじんじょうほう | kojin jouhou | |
| 48 | Login, logging in | ログイン | ろぐいん | roguin | |
| 49 | Authentication, verification | 認証 | にんしょう | ninshou | |
| 50 | Access rights, access permission | アクセス権限 | あくせすけんげん | akusesu kengen | |
| 51 | Unauthorized access | 不正アクセス | ふせいあくせす | fusei akusesu | |
| 52 | Spam email, junk mail | 迷惑メール | めいわくめーる | meiwaku meeru | |
| 53 | Security | セキュリティ | せきゅりてぃ | sekyuriti | |
| 54 | Wireless LAN, Wi-Fi | 無線LAN | むせんらん | musen ran | |
| 55 | Hijacking, takeover (of an account) | 乗っ取り | のっとり | nottori | |
| 56 | Leak, outflow (of data) | 流出 | りゅうしゅつ | ryuushutsu | |
| 57 | Impersonation, spoofing | なりすまし | なりすまし | narisumashi | |
| 58 | Confidential information | 機密情報 | きみつじょうほう | kimitsu jouhou | |
| 59 | Infection (by a virus) | 感染 | かんせん | kansen | |
| 60 | Vulnerability (security weakness) | 脆弱性 | ぜいじゃくせい | zeijakusei |
4. Online Meetings & Remote Work
| No. | Meaning | Japanese | Hiragana | Romaji | Examples |
|---|---|---|---|---|---|
| 61 | Telework, remote work | テレワーク | てれわーく | terewaaku | |
| 62 | Working from home | 在宅勤務 | ざいたくきんむ | zaitaku kinmu | |
| 63 | Screen sharing | 画面共有 | がめんきょうゆう | gamen kyouyuu | |
| 64 | Mute | ミュート | みゅーと | myuuto | |
| 65 | Network environment, connection conditions | 通信環境 | つうしんかんきょう | tsuushin kankyou | |
| 66 | Chat | チャット | ちゃっと | chatto | |
| 67 | Camera | カメラ | かめら | kamera | |
| 68 | Microphone | マイク | まいく | maiku | |
| 69 | Headset | ヘッドセット | へっどせっと | heddosetto | |
| 70 | Invitation, invite | 招待 | しょうたい | shoutai | |
| 71 | Recording (video) | 録画 | ろくが | rokuga | |
| 72 | Audio, voice | 音声 | おんせい | onsei | |
| 73 | To cut out, be interrupted | 途切れる | とぎれる | togireru | |
| 74 | Entering (a meeting room, including online) | 入室 | にゅうしつ | nyuushitsu | |
| 75 | Leaving (a room or meeting) | 退出 | たいしゅつ | taishutsu | |
| 76 | Audio feedback, howling | ハウリング | はうりんぐ | hauringu | |
| 77 | Read (message status), "seen" | 既読 | きどく | kidoku | |
| 78 | Webinar, online seminar | ウェビナー | うぇびなー | webinaa | |
| 79 | Raising one's hand | 挙手 | きょしゅ | kyoshu | |
| 80 | Hybrid work | ハイブリッド勤務 | はいぶりっどきんむ | haiburiddo kinmu |
5. Systems & Digital Business
| No. | Meaning | Japanese | Hiragana | Romaji | Examples |
|---|---|---|---|---|---|
| 81 | System introduction, system implementation | システム導入 | しすてむどうにゅう | shisutemu dounyuu | |
| 82 | Maintenance (of systems or equipment) | 保守 | ほしゅ | hoshu | |
| 83 | Failure, outage (system) | 障害 | しょうがい | shougai | |
| 84 | System modification, upgrade work | 改修 | かいしゅう | kaishuu | |
| 85 | DX, digital transformation | DX | でぃーえっくす | dii ekkusu | |
| 86 | IT literacy | ITリテラシー | あいてぃーりてらしー | ai tii riterashii | |
| 87 | Cloud (computing) | クラウド | くらうど | kuraudo | |
| 88 | Paperless | ペーパーレス | ぺーぱーれす | peepaaresu | |
| 89 | Requirements definition | 要件定義 | ようけんていぎ | youken teigi | |
| 90 | Bug (software defect) | バグ | ばぐ | bagu | |
| 91 | Recovery, restoration (of service) | 復旧 | ふっきゅう | fukkyuu | |
| 92 | Maintenance (scheduled work) | メンテナンス | めんてなんす | mentenansu | |
| 93 | Integration, linkage (between systems), cooperation | 連携 | れんけい | renkei | |
| 94 | Electronic signature | 電子署名 | でんししょめい | denshi shomei | |
| 95 | Vendor, supplier (IT) | ベンダー | べんだー | bendaa | |
| 96 | IT department, information systems department | 情報システム部 | じょうほうしすてむぶ | jouhou shisutemu bu | |
| 97 | (User) account | アカウント | あかうんと | akaunto | |
| 98 | Production environment | 本番環境 | ほんばんかんきょう | honban kankyou | |
| 99 | Generative AI | 生成AI | せいせいえーあい | seisei ee ai | |
| 100 | Server | サーバー | さーばー | saabaa |
Common Mix-ups in This List
Words that BJT learners often confuse, and how to tell them apart.
How is 端末 (tanmatsu) different from similar words?
端末 is a broad, somewhat technical umbrella term for any access device, while 機器 (kiki) means equipment or machinery in general, including things that do not connect to a system.
Usage: Common patterns are 端末を貸与する (tanmatsu wo taiyo suru), 端末を紛失する (tanmatsu wo funshitsu suru) and 業務用端末 (gyoumuyou tanmatsu). Often seen in security policies and IT announcements.
How is 電源 (dengen) different from similar words?
電源 is the power supply or switch, while 電気 (denki) is electricity or the lights in general; you say 電気を消す for lights but 電源を切る for a device.
Usage: Common patterns are 電源を入れる (dengen wo ireru, turn on), 電源を切る (dengen wo kiru, turn off) and 電源が入らない (dengen ga hairanai, won't turn on). Used with PCs, projectors and other machines.
How is スマートフォン (sumaatofon) different from similar words?
スマートフォン is the formal written form, スマホ is the casual spoken short form, and 携帯 (keitai) is a general word for any mobile phone.
Usage: Common patterns are 社用スマートフォン (shayou sumaatofon), スマートフォンから操作する (sumaatofon kara sousa suru) and スマートフォン対応 (sumaatofon taiou, smartphone-compatible).
How is 操作 (sousa) different from similar words?
操作 is what a person does to use a machine, while 動作 (dousa) is how the machine itself behaves or runs.
Usage: Common patterns are 操作する (sousa suru), 操作方法 (sousa houhou), 誤操作 (gosousa, wrong operation) and 遠隔操作 (enkaku sousa, remote control).
How is 外付け (sotozuke) different from similar words?
外付け means attached externally, while 内蔵 (naizou) means built in, as in 内蔵カメラ (built-in camera).
Usage: Common patterns are 外付けハードディスク (sotozuke haado disuku), 外付けのカメラ (sotozuke no kamera) and 外付けモニター (sotozuke monitaa).
How is アプリ (apuri) different from similar words?
アプリ usually means a specific application a user opens, while ソフトウェア (sofutowea) is the broader, more formal term for all programs, including system software.
Usage: Common patterns are アプリを入れる (apuri wo ireru, install an app), アプリを開く (apuri wo hiraku) and 専用アプリ (sen'you apuri, dedicated app).
How is 圧縮 (asshuku) different from similar words?
圧縮 makes files smaller, while 解凍 (kaitou) is the opposite, opening a compressed file back to its original form.
Usage: Common patterns are 圧縮する (asshuku suru), 圧縮ファイル (asshuku fairu) and ZIPに圧縮する (jippu ni asshuku suru). Used when attaching or transferring large files.
How is 上書き (uwagaki) different from similar words?
上書き保存 replaces the existing file, while 名前を付けて保存 (namae wo tsukete hozon, Save As) creates a new file and keeps the old one.
Usage: Common patterns are 上書きする (uwagaki suru), 上書き保存 (uwagaki hozon, save over the existing file) and 上書きされる (uwagaki sareru).
All BJT Vocabulary Lists
- Top 100 BJT Business Japanese Words: Office & Company Basics (Part 1)
- Top 100 BJT Vocabulary: Daily Work & Task-Related Words (Part 2)
- Top 100 BJT Words: Communication & Office Conversation (Part 3)
- Top 100 BJT Business Japanese: Email & Polite Expressions (Part 4)
- Top 100 BJT Vocabulary: Documents & Office Work Terms (Part 5)
- Top 100 BJT Words: Time, Schedule & Deadlines (Part 6)
- Top 100 BJT Business Terms: Money, Sales & Contracts (Part 7)
- Top 100 BJT Vocabulary: Meetings, Discussions & Decisions (Part 8)
- Top 100 BJT Words: Customer Service & Client Communication (Part 9)
- Top 100 BJT Business Japanese Verbs You Must Know (Part 10)
- Top 100 BJT Keigo: Honorific & Humble Business Expressions (Part 11)
- Top 100 BJT Words: HR, Recruitment & Employment (Part 12)
- Top 100 BJT Words: Marketing, Sales Strategy & Planning (Part 13)
- Top 100 BJT Words: IT, Systems & Online Work (Part 14)
- Top 100 BJT Words: Manufacturing, Logistics & Inventory (Part 15)
- Top 100 BJT Words: Economy, Finance & Business News (Part 16)