killjoy vs depreciation

killjoy and depreciation both are nouns.

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

killjoy (noun)	depreciation (noun)
someone who spoils the pleasure of others	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use