rivetter vs trained worker

rivetter and trained worker both are nouns.

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

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

Other hypernyms of rivetter include skilled worker, skilled workman.

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