calligrapher vs skilled workman

calligrapher and skilled workman both are nouns.

Word	Noun	Adjective	Verb	Adverb
calligrapher	Yes	No	No	No
skilled workman	Yes	No	No	No

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

Other hypernyms of calligrapher include skilled worker, trained worker.

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