harvesting vs gathering

harvesting and gathering both are nouns.

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

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

Other hypernyms of harvesting include gather.

harvesting (noun)	gathering (noun)
the gathering of a ripened crop	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