aviator vs skilled workman

aviator and skilled workman both are nouns.

Word	Noun	Adjective	Verb	Adverb
aviator	Yes	No	No	No
skilled workman	Yes	No	No	No

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

Other hypernyms of aviator include skilled worker, trained worker.

aviator (noun)	skilled workman (noun)
someone who operates an aircraft	a worker who has acquired special skills