aeronaut vs skilled workman

aeronaut and skilled workman both are nouns.

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

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

Other hypernyms of aeronaut include skilled worker, trained worker.

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