usurper vs depreciation

usurper and depreciation both are nouns.

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

usurper (noun)	depreciation (noun)
one who wrongfully or illegally seizes and holds the place of another	a decrease in price or value
	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use