rivetter vs skilled worker

rivetter and skilled worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
rivetter	Yes	No	No	No
skilled worker	Yes	No	No	No

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

Other hypernyms of rivetter include skilled workman, trained worker.

rivetter (noun)	skilled worker (noun)
a machine for driving rivets	a worker who has acquired special skills
a worker who inserts and hammers rivets