engraver vs skilled workman

engraver and skilled workman both are nouns.

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

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

engraver: a skilled worker who can inscribe designs or writing onto a surface by carving or etching
skilled workman: a worker who has acquired special skills

Other hypernyms of engraver include skilled worker, trained worker.

engraver (noun)	skilled workman (noun)
a printmaker who prints from an engraved printing plate	a worker who has acquired special skills
a skilled worker who can inscribe designs or writing onto a surface by carving or etching