repairer vs trained worker

repairer and trained worker both are nouns.

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

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

Other hypernyms of repairer include skilled worker, skilled workman.

repairer (noun)	trained worker (noun)
a skilled worker who mends or repairs things	a worker who has acquired special skills