動作（どうさ、dousa）
- movement / action

The Japanese word 動作 動作 (dōsa) refers to "action," "movement," or "behavior." It describes what someone or something does, including both physical actions and the way something operates or functions. It can apply to humans, animals, objects, or systems. 動作 focuses on the observable actions or operations performed.

⚫︎ 彼女の動作は優雅だった。 Translation: Her movements were graceful. ⚫︎ ロボットの動作をプログラムした。 Translation: I programmed the robot's actions. ⚫︎ 機械の動作がスムーズでない。 Translation: The machine's operation is not smooth.

⚫︎ Use 動作 when you want to describe a specific action or series of actions. ⚫︎ It is appropriate in a variety of contexts, from describing physical activities to explaining how a machine works. ⚫︎ It's a general term, so it can be used in both formal and informal situations, though the specific phrasing around it might change depending on the level of formality.

⚫︎ 動作 is written using the kanji 動(dō, movement) and 作 (sa, to make/create). ⚫︎ The reading is どうさ in hiragana. ⚫︎ There is no variation in the okurigana.

⚫︎ 行動（こうどう） - "behavior," "action" ⚫︎ 動き（うごき） - "movement" ⚫︎ 活動（かつどう） - "activity" ⚫︎ 振る舞い（ふるまい） - "behavior," "conduct"

⚫︎ 静止（せいし） - "stillness," "immobility" ⚫︎ 不動（ふどう） - "immobility," "motionlessness"

彼はその事件の動作について、警察に詳細を説明した。 ・Translation: He explained the details of his actions in that incident to the police. ・Explanation: This sentence uses 動作 to refer to someone's specific actions.

この機械の動作原理を教えてください。 ・Translation: Please explain the operating principle of this machine. ・Explanation: Here, 動作 is used to discuss how a machine functions.

The word 動作 is formed from two kanji: 動 meaning "movement" or "motion," and 作 meaning "to make," "to create," or "to operate." This combination indicates "an act of moving" or "something that is made to function."