작용이 · 작용을
action, effect, function (of something)
Example
운동은 스트레스를 줄이는 작용을 해요.
Exercise works to reduce stress.
Word parts
작 make+용 use
Literally 'make use' — what something does.
Good to know
부작용 'side effect' is a very common word built on 작용.
Related words