winnow vs select

winnow is a noun but select is not a noun.

Word	Noun	Adjective	Verb	Adverb
winnow	Yes	No	Yes	No
select	No	Yes	Yes	No

As verbs, select is a hypernym of winnow; that is, select is a word with a broader meaning than winnow:

Other hypernyms of winnow include choose, pick out, take.

winnow (noun)	select (noun)
the act of separating grain from chaff

winnow (adjective)	select (adjective)
	selected or chosen for special qualifications
	of superior grade

winnow (verb)	select (verb)
blow away or off with a current of air	pick out, select, or choose from a number of alternatives
select desirable parts from a group or list
separate the chaff from grain by using air currents
blow on