draftsman vs trained worker

draftsman and trained worker both are nouns.

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

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

Other hypernyms of draftsman include skilled worker, skilled workman.

draftsman (noun)	trained worker (noun)
a skilled worker who draws plans of buildings or machines	a worker who has acquired special skills
an artist skilled at drawing