serial killer vs depreciation

serial killer and depreciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
serial killer	Yes	No	No	No
depreciation	Yes	No	No	No

serial killer (noun)	depreciation (noun)
someone who murders more than three victims one at a time in a relatively short interval	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use