facing vs protective covering

facing and protective covering both are nouns.

Word	Noun	Adjective	Verb	Adverb
facing	Yes	No	No	No
protective covering	Yes	No	No	No

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

facing: a protective covering that protects the outside of a building
protective covering: a covering that is intend to protect from damage or injury

Other hypernyms of facing include protection, protective cover.

facing (noun)	protective covering (noun)
providing something with a surface of a different material	the tough natural covering of some organisms
a protective covering that protects the outside of a building	a covering that is intend to protect from damage or injury
a lining applied to the edge of a garment for ornamentation or strengthening
an ornamental coating to a building