shun vs shunning

shun is not a noun while shunning is a noun.

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

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

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