facing vs covering

facing and covering both are nouns.

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

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

Other hypernyms of facing include application, coating.

facing (noun)	covering (noun)
providing something with a surface of a different material	the act of protecting something by covering it
a protective covering that protects the outside of a building	the work of applying something
a lining applied to the edge of a garment for ornamentation or strengthening	the act of concealing the existence of something by obstructing the view of it
an ornamental coating to a building	an artifact that covers something else (usually to protect or shelter or conceal it)
	a natural object that covers or envelops