depreciation vs sewer rat

depreciation and sewer rat both are nouns.

Word	Noun	Adjective	Verb	Adverb
depreciation	Yes	No	No	No
sewer rat	Yes	No	No	No

depreciation (noun)	sewer rat (noun)
a decrease in price or value	brown rat commonly found in sewers
a communication that belittles somebody or something
decrease in value of an asset due to obsolescence or use