Action
Conduct, Behaviour, Behavior
noun, verbal noun, の adjective
When you go to move you're actually making an action. It's these behaviors when you go and move that determine what people think about you.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
彼は毎日同じ時間に同じ行動をします。
He does the same action at the same time every day.
いつもコウイチの行動パターンは決まっている。
Koichi's behavioral patterns are always the same.
あの人は発言と行動が一致していない。
That person's words and actions don't match up.