crew vs co-pilot

crew and co-pilot both are nouns.

Word	Noun	Adjective	Verb	Adverb
crew	Yes	No	Yes	No
co-pilot	Yes	No	No	No

crew (noun)	co-pilot (noun)
an organized group of workmen	a relief pilot on an airplane
the men and women who man a vehicle (ship, aircraft, etc.)
the team of men or women manning a racing shell
an informal body of friends

crew (verb)	co-pilot (verb)
serve as a crew member on