carbon vs carbonate

carbon and carbonate both are nouns.

Word	Noun	Adjective	Verb	Adverb
carbon	Yes	No	No	No
carbonate	Yes	No	Yes	No

carbon (noun)	carbonate (noun)
a copy made with carbon paper	a salt or ester of carbonic acid (containing the anion CO3)
an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
a thin paper coated on one side with a dark waxy substance (often containing carbon); used to transfer characters from the original to an under sheet of paper

carbon (verb)	carbonate (verb)
	treat with carbon dioxide
	turn into a carbonate