glean vs harvest

glean is not a noun while harvest is a noun.

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

As verbs, glean and harvest are synonyms defined as:

Other synonyms of glean include reap.

glean (noun)	harvest (noun)
	the season for gathering crops
	the gathering of a ripened crop
	the consequence of an effort or activity
	the yield from plants in a single growing season

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