population vs populate

population is a noun but populate is not a noun.

Word	Noun	Adjective	Verb	Adverb
population	Yes	No	No	No
populate	No	No	Yes	No

population (noun)	populate (noun)
the act of populating (causing to live in a place)
(statistics) the entire aggregation of items from which samples can be drawn
the people who inhabit a territory or state
a group of organisms of the same species inhabiting a given area
the number of inhabitants (either the total number or the number of a particular race or class) in a given place (country or city etc.)

population (verb)	populate (verb)
	fill with inhabitants
	be an inhabitant of or reside in