chalk vs calcium carbonate

chalk and calcium carbonate both are nouns.

Word	Noun	Adjective	Verb	Adverb
chalk	Yes	No	Yes	No
calcium carbonate	Yes	No	No	No

chalk (noun)	calcium carbonate (noun)
a piece of calcite or a similar substance, usually in the shape of a crayon, that is used to write or draw on blackboards or other flat surfaces	a salt found in nature as chalk or calcite or aragonite or limestone
an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant
a pure flat white with little reflectance
a soft whitish calcite

chalk (verb)	calcium carbonate (verb)
write, draw, or trace with chalk