課(か)

か
suffix
lesson, section, department
1. lesson, chapter
A numbered section in a textbook or course.
この課(か)は難(むずか)しい。
This lesson is difficult.
第(だい)5課(か)を勉強(べんきょう)しましょう。
Let's study Lesson 5.
教科書(きょうかしょ)の第(だい)10課(か)まで終(お)わったので、来週(らいしゅう)から新(あたら)しい本(ほん)を使(つか)う。
We finished up to Lesson 10 in the textbook, so we'll use a new book starting next week.
2. section, department
A division within an organization.
営業(えいぎょう)課(か)で働(はたら)いている。
I work in the sales department.
人事(じんじ)課(か)に連絡(れんらく)してください。
Please contact the personnel department.
来月(らいげつ)から総務(そうむ)課(か)に異動(いどう)することになった。
I'll be transferred to the general affairs department starting next month.

課(か) is a suffix with two main uses: numbered lessons in educational materials and divisions within organizations.

FOR LESSONS:

FOR DEPARTMENTS:

ORGANIZATIONAL HIERARCHY:
課(か) is smaller than 部(ぶ) (department/division). Common structure: 会社(かいしゃ) → 部(ぶ) → 課(か)

RELATED:

Related Words

Related: 〜部(ぶ) (department (larger unit))
Related: 課長(かちょう) (section chief)
Related: 課題(かだい) (assignment, task)
general
Added 2026.1.8 21:18 · Revised 2026.5.16 6:33
01500/01548_ka