depreciation vs pest

depreciation and pest both are nouns.

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

depreciation (noun)	pest (noun)
a decrease in price or value	any unwanted and destructive insect or other animal that attacks food or crops or livestock etc.
a communication that belittles somebody or something	a persistently annoying person
decrease in value of an asset due to obsolescence or use	any epidemic disease with a high death rate
	a serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal