1. movement (of the body); action; motion; gesture
しかし、その動作は途中で止まった。However, that movement stopped midway.
2. bearing; carriage; behaviour; behavior; demeanour; demeanor
Noun
Verb (する, intransitive)
3. operation (of a machine, software, etc.); running; working; functioning
動作を停止しているようだ。It seems that the operation has stopped.