crew vs work force

crew and work force both are nouns.

Word	Noun	Adjective	Verb	Adverb
crew	Yes	No	Yes	No
work force	Yes	No	No	No

crew (noun)	work force (noun)
an organized group of workmen	the force of workers available
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)	work force (verb)
serve as a crew member on