pestiferous vs depreciation

pestiferous is not a noun while depreciation is a noun.

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

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

pestiferous (adjective)	depreciation (adjective)
causing irritation or annoyance
likely to spread and cause an epidemic disease
tending to corrupt or pervert
contaminated with infecting organisms