mercuric vs mercury

mercuric is not a noun while mercury is a noun.

Word	Noun	Adjective	Verb	Adverb
mercuric	No	Yes	No	No
mercury	Yes	No	No	No

mercuric (noun)	mercury (noun)
	temperature measured by a mercury thermometer
	a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures

mercuric (adjective)	mercury (adjective)
of or containing mercury