wine tasting vs gathering

wine tasting and gathering both are nouns.

Word	Noun	Adjective	Verb	Adverb
wine tasting	Yes	No	No	No
gathering	Yes	No	No	No

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

Other hypernyms of wine tasting include assemblage, assembly.

wine tasting (noun)	gathering (noun)
a gathering of people to taste and compare different wines	the social act of assembling
	the act of gathering something
	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