This is the 7999th most frequent Korean word.
act
The Korean word "act" (행동하다) means "to take action or do something."
Here, 'acts' (행동한다) conveys the behavior someone portrays.
그는 항상 친절한 척 행동한다.
He always acts as if he is kind.
In this sentence, 'acted' (연기했다) refers to performing as characters in a theatrical play.
그들은 연극에서 주요 역할을 맡아 연기했다.
They acted in a play as the main roles.
Here, 'action' (행동) means taking steps or measures promptly.