application vs facing

application and facing both are nouns.

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

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

application (noun)	facing (noun)
the action of putting something into operation	providing something with a surface of a different material
a diligent effort	a protective covering that protects the outside of a building
the act of bringing something to bear; using it for a particular purpose	a lining applied to the edge of a garment for ornamentation or strengthening
the work of applying something	an ornamental coating to a building
liquid preparation having a soothing or antiseptic or medicinal action when applied to the skin
a verbal or written request for assistance or employment or admission to a school
a program that gives a computer instructions that provide the user with tools to accomplish a task