metal vs auriferous

metal is a noun but auriferous is not a noun.

Word	Noun	Adjective	Verb	Adverb
metal	Yes	Yes	Yes	No
auriferous	No	Yes	No	No

metal (noun)	auriferous (noun)
any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten

metal (adjective)	auriferous (adjective)
containing or made of or resembling or characteristic of a metal	containing gold

metal (verb)	auriferous (verb)
cover with metal