harvest vs gathering

harvest and gathering both are nouns.

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

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

Other hypernyms of harvest include gather.

harvest (noun)	gathering (noun)
the season for gathering crops	the social act of assembling
the gathering of a ripened crop	the act of gathering something
the consequence of an effort or activity	sewing consisting of small folds or puckers made by pulling tight a thread in a line of stitching
the yield from plants in a single growing season	a group of persons together in one place

harvest (verb)	gathering (verb)
remove from a culture or a living or dead body, as for the purposes of transplantation
gather, as of natural products