damp vs damper

damp and damper both are nouns.

Word	Noun	Adjective	Verb	Adverb
damp	Yes	Yes	Yes	No
damper	Yes	No	No	No

damp (noun)	damper (noun)
a slight wetness	a depressing restraint
	a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations
	a movable iron plate that regulates the draft in a stove or chimney or furnace

damp (adjective)	damper (adjective)
slightly wet

damp (verb)	damper (verb)
lessen in force or effect
make vague or obscure or make (an image) less visible
restrain or discourage
deaden (a sound or noise), especially by wrapping