depreciation vs sleeper

depreciation and sleeper both are nouns.

Word	Noun	Adjective	Verb	Adverb
depreciation	Yes	No	No	No
sleeper	Yes	No	No	No

depreciation (noun)	sleeper (noun)
a decrease in price or value	an unexpected hit
a communication that belittles somebody or something	tropical fish that resembles a goby and rests quietly on the bottom in shallow water
decrease in value of an asset due to obsolescence or use	a passenger car that has berths for sleeping
	one of the cross braces that support the rails on a railway track
	a piece of furniture that can be opened up into a bed
	pajamas with feet; worn by children
	a rester who is sleeping
	an unexpected achiever of success
	a spy or saboteur or terrorist planted in an enemy country who lives there as a law-abiding citizen until activated by a prearranged signal