humourist vs wag

humourist and wag both are nouns.

Word	Noun	Adjective	Verb	Adverb
humourist	Yes	No	No	No
wag	Yes	No	Yes	No

As nouns, wag is a hyponym of humourist; that is, wag is a word with a more specific, narrower meaning than humourist:

Other hyponyms of humourist include lampooner, parodist, punster, ironist, ridiculer, satirist, card, wit.

humourist (noun)	wag (noun)
someone who acts, speaks or writes in an amusing way	causing to move repeatedly from side to side
	a witty amusing person who makes jokes

humourist (verb)	wag (verb)
	move from side to side