harvester vs harvest

harvester and harvest both are nouns.

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

harvester (noun)	harvest (noun)
farm machine that gathers a food crop from the fields	the season for gathering crops
someone who helps to gather the harvest	the gathering of a ripened crop
	the consequence of an effort or activity
	the yield from plants in a single growing season

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