infiltration vs infiltrate

infiltration is a noun but infiltrate is not a noun.

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

infiltration (noun)	infiltrate (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

infiltration (verb)	infiltrate (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