soap-rock vs soapstone

soap-rock and soapstone both are nouns.

Word	Noun	Adjective	Verb	Adverb
soap-rock	Yes	No	No	No
soapstone	Yes	No	No	No

As nouns, soap-rock and soapstone are synonyms defined as:

soap-rock and soapstone: a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments

Other synonyms of soap-rock include soaprock, steatite.

soap-rock (noun)	soapstone (noun)
a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments	a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments