ground-service crew vs crew

ground-service crew and crew both are nouns.

Word	Noun	Adjective	Verb	Adverb
ground-service crew	Yes	No	No	No
crew	Yes	No	Yes	No

As nouns, crew is a hypernym of ground-service crew; that is, crew is a word with a broader meaning than ground-service crew:

ground-service crew: the crew of technicians and mechanics who service aircraft on the ground
crew: an organized group of workmen

Other hypernyms of ground-service crew include gang, work party.

ground-service crew (noun)	crew (noun)
the crew of technicians and mechanics who service aircraft on the ground	an organized group of workmen
	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

ground-service crew (verb)	crew (verb)
	serve as a crew member on