avustaja (englanniksi)

assistant (s: henkilö, jonka tehtävänä on auttaa jotakuta toista)
aide (s: military)
auxiliary (s)
sidekick (s: person who assists or helps someone else)
aide-de-camp (s: military)
adjutant (s: military / officer who acts as assistant to a more senior one)
attendant (s: military / one who attends)
second (s: military / attendant of a duel or boxing match standing in for a contestant)
paralegal (s: military)
legal assistant (s: military / lawyer's assistant)
crew (s: in plural / non-actor members of a theatrical or film production)