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BJT Vocabulary · Part 14

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.

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