stone facing vs facing

stone facing and facing both are nouns.

Word	Noun	Adjective	Verb	Adverb
stone facing	Yes	No	No	No
facing	Yes	No	No	No

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

Other hypernyms of stone facing include cladding.

stone facing (noun)	facing (noun)
a facing (usually masonry) that supports an embankment	providing something with a surface of a different material
	a protective covering that protects the outside of a building
	a lining applied to the edge of a garment for ornamentation or strengthening
	an ornamental coating to a building