IPA: //ˈsoʊpˌstoʊn//
KK: /ˈsoʊpˌstoʊn/
A type of soft rock that is mainly made of talc and is often used for carving and making sculptures.
The artist chose soapstone for his sculpture because it is easy to carve.
Soapstone is formed from "soap" (from Old English *sape*, meaning a fatty substance) and "stone" (from Old English *stan*, meaning rock or stone). The word refers to a soft, soapy-feeling stone that can be easily carved and is often used for sculptures and countertops.
Think of a 'fatty substance' ('soap') that feels 'rock-like' ('stone') — that's why soapstone is a soft stone that feels smooth and can be shaped easily.