dampener vs dampen

dampener is a noun but dampen is not a noun.

Word	Noun	Adjective	Verb	Adverb
dampener	Yes	No	No	No
dampen	No	No	Yes	No

dampener (noun)	dampen (noun)
a device that dampens or moistens something

dampener (verb)	dampen (verb)
	lessen in force or effect
	make moist
	check; keep in check (a fire)
	make vague or obscure or make (an image) less visible
	reduce the amplitude (of oscillations or waves)
	suppress or constrain so as to lessen in intensity
	deaden (a sound or noise), especially by wrapping