haying vs harvest

haying and harvest both are nouns.

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

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

Other hypernyms of haying include harvest home, harvesting.

haying (noun)	harvest (noun)
the season for cutting and drying and storing grass as fodder	the season for gathering crops
the harvesting of hay	the gathering of a ripened crop
	the consequence of an effort or activity
	the yield from plants in a single growing season

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