Alabaster
Part of speech: noun
Definition: A fine-grained white or lightly-tinted variety of gypsum, used ornamentally. A variety of calcite, translucent and sometimes banded.
Part of speech: adjective
Definition: Made of alabaster Resembling alabaster: white, pale, translucent.
Gypsum
Part of speech: noun
Definition: A mineral consisting of the hydrated calcium sulphate. When calcined, it forms plaster of Paris.