depreciation vs poor fish

depreciation and poor fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
depreciation	Yes	No	No	No
poor fish	Yes	No	No	No

depreciation (noun)	poor fish (noun)
a decrease in price or value	a person who is not very bright
a communication that belittles somebody or something
decrease in value of an asset due to obsolescence or use