gadfly vs depreciation

gadfly and depreciation both are nouns.

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

gadfly (noun)	depreciation (noun)
any of various large flies that annoy livestock	a decrease in price or value
a persistently annoying person	a communication that belittles somebody or something
	decrease in value of an asset due to obsolescence or use