lunacy vs depreciation

lunacy and depreciation both are nouns.

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

lunacy (noun)	depreciation (noun)
foolish or senseless behavior	a decrease in price or value
obsolete terms for legal insanity	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use