depreciation vs pestiferous

depreciation is a noun but pestiferous is not a noun.

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

depreciation (noun)	pestiferous (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

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