draughtsman vs skilled workman

draughtsman and skilled workman both are nouns.

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

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

Other hypernyms of draughtsman include skilled worker, trained worker.

draughtsman (noun)	skilled workman (noun)
a skilled worker who draws plans of buildings or machines	a worker who has acquired special skills