lining vs facing

lining and facing both are nouns.

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

As nouns, lining and facing are synonyms defined as:

lining and facing: providing something with a surface of a different material

As nouns, facing is a hyponym of lining; that is, facing is a word with a more specific, narrower meaning than lining:

lining: a protective covering that protects an inside surface
facing: a lining applied to the edge of a garment for ornamentation or strengthening

Other hyponyms of lining include brake lining, bushing, cylindrical lining, furnace lining, refractory.

lining (noun)	facing (noun)
the act of attaching an inside lining (to a garment or curtain etc.)	providing something with a surface of a different material
providing something with a surface of a different material	a protective covering that protects the outside of a building
a protective covering that protects an inside surface	a lining applied to the edge of a garment for ornamentation or strengthening
a piece of cloth that is used as the inside surface of a garment	an ornamental coating to a building