crew vs stage crew

crew and stage crew both are nouns.

Word	Noun	Adjective	Verb	Adverb
crew	Yes	No	Yes	No
stage crew	Yes	No	No	No

As nouns, stage crew is a hyponym of crew; that is, stage crew is a word with a more specific, narrower meaning than crew:

crew: an organized group of workmen
stage crew: crew of workers who move scenery or handle properties in a theatrical production

crew (noun)	stage crew (noun)
an organized group of workmen	crew of workers who move scenery or handle properties in a theatrical production
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)	stage crew (verb)
serve as a crew member on