harpooner vs skilled workman

harpooner and skilled workman both are nouns.

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

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

Other hypernyms of harpooner include skilled worker, trained worker.

harpooner (noun)	skilled workman (noun)
someone who launches harpoons	a worker who has acquired special skills