calligrapher vs trained worker

calligrapher and trained worker both are nouns.

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

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

Other hypernyms of calligrapher include skilled worker, skilled workman.

calligrapher (noun)	trained worker (noun)
someone skilled in penmanship	a worker who has acquired special skills