baker vs trained worker

baker and trained worker both are nouns.

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

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

Other hypernyms of baker include skilled worker, skilled workman.

baker (noun)	trained worker (noun)
someone who bakes bread or cake	a worker who has acquired special skills
someone who bakes commercially