select vs selector

select is not a noun while selector is a noun.

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

select (noun)	selector (noun)
	a switch that is used to select among alternatives
	a person who chooses or selects out

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

select (verb)	selector (verb)
pick out, select, or choose from a number of alternatives