shunning vs shun

shunning is a noun but shun is not a noun.

Word	Noun	Adjective	Verb	Adverb
shunning	Yes	No	No	No
shun	No	No	Yes	No

shunning (noun)	shun (noun)
deliberately avoiding; keeping away from or preventing from happening

shunning (verb)	shun (verb)
	avoid and stay away from deliberately; stay clear of
	expel from a community or group