noun, noun or participle which takes 'suru', intransitive verb, noun which may take the genitive case particle 'no'
action; conduct; behavior; mobilization
Broad term covering what a person or group does, from everyday behavior to organized campaigns. The 'mobilization' sense appears in contexts like social movements or military action.
彼の行動はいつも予測できない。
His actions are always unpredictable.
環境保護のために行動を起こそう。
Let's take action for environmental protection.
学生たちは学費値上げに反対して行動した。
The students mobilized against the tuition hike.