facing vs cladding

facing and cladding both are nouns.

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

As nouns, facing and cladding are synonyms defined as:

facing and cladding: a protective covering that protects the outside of a building

facing (noun)	cladding (noun)
providing something with a surface of a different material	a protective covering that protects the outside of a building
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