damper vs dash-pot

damper and dash-pot both are nouns.

Word	Noun	Adjective	Verb	Adverb
damper	Yes	No	No	No
dash-pot	Yes	No	No	No

As nouns, dash-pot is a hyponym of damper; that is, dash-pot is a word with a more specific, narrower meaning than damper:

damper: a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations
dash-pot: a mechanical damper; the vibrating part is attached to a piston that moves in a chamber filled with liquid

Other hyponyms of damper include damper block, piano damper, cushion, shock, shock absorber.

damper (noun)	dash-pot (noun)
a depressing restraint	a mechanical damper; the vibrating part is attached to a piston that moves in a chamber filled with liquid
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