anachronous vs anachronism

anachronous is not a noun while anachronism is a noun.

Word	Noun	Adjective	Verb	Adverb
anachronous	No	Yes	No	No
anachronism	Yes	No	No	No

anachronous (noun)	anachronism (noun)
	an artifact that belongs to another time
	a person who seems to be displaced in time; who belongs to another age
	something located at a time when it could not have existed or occurred

anachronous (adjective)	anachronism (adjective)
chronologically misplaced