bunch vs gathering

bunch and gathering both are nouns.

Word	Noun	Adjective	Verb	Adverb
bunch	Yes	No	Yes	No
gathering	Yes	No	No	No

As nouns, gathering is a hypernym of bunch; that is, gathering is a word with a broader meaning than bunch:

Other hypernyms of bunch include assemblage.

bunch (noun)	gathering (noun)
a grouping of a number of similar things	the social act of assembling
an informal body of friends	the act of gathering something
any collection in its entirety	sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching
	a group of persons together in one place

bunch (verb)	gathering (verb)
gather or cause to gather into a cluster
form into a bunch