snake in the grass vs depreciation

snake in the grass and depreciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
snake in the grass	Yes	No	No	No
depreciation	Yes	No	No	No

snake in the grass (noun)	depreciation (noun)
a deceitful or treacherous person	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use