crew member vs skilled workman

crew member and skilled workman both are nouns.

Word	Noun	Adjective	Verb	Adverb
crew member	Yes	No	No	No
skilled workman	Yes	No	No	No

As nouns, skilled workman is a hypernym of crew member; that is, skilled workman is a word with a broader meaning than crew member:

Other hypernyms of crew member include skilled worker, trained worker.

crew member (noun)	skilled workman (noun)
a member of a flight crew	a worker who has acquired special skills