talc vs French chalk

talc and French chalk both are nouns.

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

As nouns, French chalk is a hyponym of talc; that is, French chalk is a word with a more specific, narrower meaning than talc:

talc: a fine grained mineral having a soft soapy feel and consisting of hydrated magnesium silicate; used in a variety of products including talcum powder
French chalk: a soft white compact talc used to mark cloth or to remove grease stains

Other hyponyms of talc include soap-rock, soaprock, soapstone, steatite, rensselaerite.

talc (noun)	French chalk (noun)
a fine grained mineral having a soft soapy feel and consisting of hydrated magnesium silicate; used in a variety of products including talcum powder	a soft white compact talc used to mark cloth or to remove grease stains

talc (verb)	French chalk (verb)
apply talcum powder to (one's body)