shearer vs trained worker

shearer and trained worker both are nouns.

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

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

Other hypernyms of shearer include skilled worker, skilled workman.

shearer (noun)	trained worker (noun)
a skilled worker who shears the wool off of sheep or other animals	a worker who has acquired special skills
a workman who uses shears to cut leather or metal or textiles