infiltrate vs infiltration

infiltrate is not a noun while infiltration is a noun.

Word	Noun	Adjective	Verb	Adverb
infiltrate	No	No	Yes	No
infiltration	Yes	No	No	No

infiltrate (noun)	infiltration (noun)
	a process in which individuals (or small groups) penetrate an area (especially the military penetration of enemy positions without detection)
	the slow passage of a liquid through a filtering medium

infiltrate (verb)	infiltration (verb)
pass through an enemy line; in a military conflict
cause (a liquid) to enter by penetrating the interstices
pass into or through by filtering or permeating
enter a group or organization in order to spy on the members