Meaning
The kanji 課 (か) is a versatile character in Japanese, primarily meaning "section," "lesson," "department," or "task/duty." At its heart, it conveys the idea of division, assignment, or imposition. This character is frequently encountered in both educational and corporate settings, appearing in textbooks as "lessons" and in office structures as "departments." Grasping its fundamental role is key to understanding much of Japan's organizational and educational vocabulary.
Etymologically, 課 is a 形声文字 (keisei moji), or a phono-semantic compound, meaning it combines a semantic radical with a phonetic component. It consists of two main parts:
- The left-hand radical, 言 (ごんべん, gonben), means "word" or "speech." This radical often indicates that the kanji's meaning relates to communication, language, or instruction. Here, it suggests that the kanji's function involves verbal or written communication.
- The right-hand component, 咼 (か), functions primarily as a phonetic element, providing the "ka" sound. While 咼 itself can mean "crooked" or "askew" in isolation, its main role in 課 is auditory. However, some interpretations connect it to the idea of "dividing" or "assigning" something, especially tasks or responsibilities, through speech or instruction.
Combined, these components suggest the act of assigning or dividing duties, lessons, or charges through words or instructions. This aligns perfectly with its modern uses: a "lesson" is a division of learning, a "department" is a division of an organization with assigned duties, and a "task" is an assigned responsibility that must be fulfilled. This deep connection between its visual form and its various meanings makes 課 a fascinating character for learners.
The kanji 課 has 11 strokes and is taught in Grade 5 of Japanese elementary school, making it a relatively common and foundational character for intermediate learners.
Readings
The kanji 課 primarily uses its On'yomi, or Chinese-derived readings. Unlike many other kanji, 課 does not have a commonly used standalone Kun'yomi (native Japanese reading). Its meaning is almost always conveyed through compounds using its On'yomi, a key characteristic to remember for this kanji.
On'yomi (音読み) — Chinese-derived readings
The predominant On'yomi for 課 is カ (KA). This reading is consistently used across nearly all compound words involving this kanji, signifying its roles in education, administration, and imposition. Mastering this single, versatile reading is essential for understanding 課 and its various applications in Japanese.
- 課題 (kadai) — This compound means "task," "assignment," or "challenge." You'll often see it in academic settings for homework assignments or in business contexts for project tasks. It refers to something that needs to be addressed or solved.
- 課長 (kachō) — Meaning "section chief" or "manager of a section." This is a very common title in Japanese corporate and governmental structures, denoting the head of a specific operational division and their responsibilities.
- 課税 (kazei) — This term refers to "taxation" or "levying a tax." It highlights the kanji's meaning of imposing a charge or duty, often by governmental authority, and is a frequently used term in economic discussions.
Kun'yomi (訓読み) — Native Japanese readings
The kanji 課 does not have common standalone Kun'yomi readings that are widely taught or used. While the verb 課す (かす), meaning "to impose" or "to assign," exists and is directly related to the kanji 課, it's typically considered a verb derived from the kanji's On'yomi rather than a true Kun'yomi of the isolated character. For most practical purposes at the JLPT N3 level and beyond, students should focus primarily on its On'yomi in compound words, as this is where the kanji's utility truly lies.
Common Words & Compounds
The kanji 課 is highly productive, forming many compound words used in daily life, business, and education. Here are some key compounds, organized by their thematic usage, to help you understand its diverse applications and become comfortable using them in different contexts.
Workplace and Organizational Structures
- 課長 (kachō) — Section chief; a mid-level management position in Japanese companies and government offices, responsible for overseeing a specific section.
- 部課 (buka) — Departments and sections; a general term referring to various divisions within an organization, highlighting the hierarchical structure.
- 総務課 (sōmuka) — General affairs section; the administrative department responsible for overall office operations and coordination.
- 営業課 (eigyōka) — Sales section; the department specifically responsible for sales activities and achieving sales targets.
- 経理課 (keirika) — Accounting section; the department handling financial records, transactions, and budget management.
Education and Tasks
- 課題 (kadai) — Task, assignment, challenge; something that needs to be accomplished or solved, often in an academic or project setting.
- 日課 (nikka) — Daily routine, daily task; scheduled activities or duties that are performed regularly each day.
- 第一課 (daiikka) — Lesson One; commonly used to refer to chapters or lessons in textbooks and learning materials.
- 課程 (katei) — Course, curriculum; the planned sequence of study or training, outlining an educational journey.
Imposition and Charges
- 課税 (kazei) — Taxation; the act of imposing a tax on goods, services, or income. This term is fundamental for understanding fiscal policy.
- 課金 (kakin) — Charging a fee, payment; often used in the context of games, apps, or services that require additional payments for premium features.
- 重課金 (jūkakin) — Heavy charge, overcharging; specifically referring to high or excessive fees, often implying dissatisfaction or unfairness.
- 課す (kasu) — To impose, to levy, to assign; this verb is crucial for understanding the active sense of the kanji. Though often written in hiragana as かす, its origin is clearly the kanji 課, indicating the act of placing a burden or responsibility.
Example Sentences
この本の第三課は少し難しいです。
Kono hon no daisan-ka wa sukoshi muzukashii desu.
Lesson three of this book is a little difficult.
私の父は会社で課長をしています。
Watashi no chichi wa kaisha de kachō o shiteimasu.
My father works as a section chief at a company.
このプロジェクトの最も大きな課題は、予算の制限です。
Kono purojekuto no mottomo ookina kadai wa, yosan no seigen desu.
The biggest challenge for this project is the budget limitation.
政府は新しいサービスに課税することを検討しています。
Seifu wa atarashii sābisu ni kazei suru koto o kentō shiteimasu.
The government is considering taxing new services.
ゲームの無料部分以外は課金が必要です。
Gēmu no muryō bubun igai wa kakin ga hitsuyō desu.
Payment is required for parts of the game other than the free section.
毎日の日課として、ジョギングをしています。
Mainichi no nikka to shite, jogingu o shiteimasu.
I jog as part of my daily routine.
私たちは新しい企画を広報課に提案しました。
Watashitachi wa atarashii kikaku o kōhōka ni teian shimashita.
We proposed a new plan to the public relations section.
教師は生徒に多くの宿題を課しました。
Kyōshi wa seito ni ooku no shukudai o kashimashita.
The teacher assigned a lot of homework to the students.
この大学の課程はとても厳しいと聞いています。
Kono daigaku no katei wa totemo kibishii to kiiteimasu.
I hear this university's curriculum is very rigorous.
Memory Tip
To remember the kanji 課, think of its components: 言 (word, speech) and 咼 (phonetic for か, historically linked to division or assignment). Imagine a manager or a teacher using their "words" (言) to "divide" or "assign" tasks and lessons. For example, picture a boss verbally assigning duties to different "sections" (課) of their team, or a teacher orally presenting the day's "lesson" (課) to students. The "word" radical serves as a reminder that these divisions or assignments are often communicated verbally or through written instructions, reinforcing the ideas of tasks, sections, and lessons. This mnemonic helps connect the visual form of the kanji with its abstract meanings, making it easier to recall.