chalk pit vs stone pit

chalk pit and stone pit both are nouns.

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

As nouns, stone pit is a hypernym of chalk pit; that is, stone pit is a word with a broader meaning than chalk pit:

Other hypernyms of chalk pit include pit, quarry.

chalk pit (noun)	stone pit (noun)
a quarry for chalk	a surface excavation for extracting stone or slate