megalomaniac vs depreciation

megalomaniac and depreciation both are nouns.

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

megalomaniac (noun)	depreciation (noun)
a pathological egotist	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use