fumigator vs skilled workman

fumigator and skilled workman both are nouns.

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

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

Other hypernyms of fumigator include skilled worker, trained worker.

fumigator (noun)	skilled workman (noun)
a device that generates a gas for the purpose of disinfecting or eradicating pests	a worker who has acquired special skills
someone whose job is to fumigate