navigate vs navigator

navigate is not a noun while navigator is a noun.

Word	Noun	Adjective	Verb	Adverb
navigate	No	No	Yes	No
navigator	Yes	No	No	No

navigate (noun)	navigator (noun)
	in earlier times, a person who explored by ship
	the member of an aircrew who is responsible for the aircraft's course
	the ship's officer in charge of navigation

navigate (verb)	navigator (verb)
act as the navigator in a car, plane, or vessel and plan, direct, plot the path and position of the conveyance
travel on water propelled by wind or by other means
direct carefully and safely