bottom feeder vs depreciation

bottom feeder and depreciation both are nouns.

Word	Noun	Adjective	Verb	Adverb
bottom feeder	Yes	No	No	No
depreciation	Yes	No	No	No

bottom feeder (noun)	depreciation (noun)
an opportunist who profits from the misfortunes 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