hired gun vs depreciation

hired gun and depreciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
hired gun	Yes	No	No	No
depreciation	Yes	No	No	No

hired gun (noun)	depreciation (noun)
a professional killer who uses a gun	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use