chalk vs chalk

chalk and chalk both are nouns.

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

chalk (noun)	chalk (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 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
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	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 pure flat white with little reflectance
a soft whitish calcite	a soft whitish calcite

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