china stone vs kaoline

china stone and kaoline both are nouns.

Word	Noun	Adjective	Verb	Adverb
china stone	Yes	No	No	No
kaoline	Yes	No	No	No

As nouns, china stone and kaoline are synonyms defined as:

china stone and kaoline: a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper)

Other synonyms of china stone include china clay, kaolin, porcelain clay, terra alba.

china stone (noun)	kaoline (noun)
a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper)	a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper)