depreciation vs lunacy

depreciation and lunacy both are nouns.

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

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