craftsman vs skilled worker

craftsman and skilled worker both are nouns.

Word	Noun	Adjective	Verb	Adverb
craftsman	Yes	No	No	No
skilled worker	Yes	No	No	No

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

Other hypernyms of craftsman include skilled workman, trained worker.

craftsman (noun)	skilled worker (noun)
a skilled worker who practices some trade or handicraft	a worker who has acquired special skills
a creator of great skill in the manual arts
a professional whose work is consistently of high quality