sneak thief vs depreciation

sneak thief and depreciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
sneak thief	Yes	No	No	No
depreciation	Yes	No	No	No

sneak thief (noun)	depreciation (noun)
a thief who steals without using violence	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use