depreciation vs fifth columnist

depreciation and fifth columnist both are nouns.

Word	Noun	Adjective	Verb	Adverb
depreciation	Yes	No	No	No
fifth columnist	Yes	No	No	No

depreciation (noun)	fifth columnist (noun)
a decrease in price or value	a member of a clandestine subversive organization who tries to help a potential invader
a communication that belittles somebody or something
decrease in value of an asset due to obsolescence or use