collar vs facing

collar and facing both are nouns.

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

collar (noun)	facing (noun)
the act of apprehending (especially apprehending a criminal)	providing something with a surface of a different material
a figurative restraint	a protective covering that protects the outside of a building
a band that fits around the neck and is usually folded over	a lining applied to the edge of a garment for ornamentation or strengthening
necklace that fits tightly around a woman's neck	an ornamental coating to a building
a band of leather or rope that is placed around an animal's neck as a harness or to identify it
the stitching that forms the rim of a shoe or boot
a short ring fastened over a rod or shaft to limit, guide, or secure a machine part
anything worn or placed about the neck
(zoology) an encircling band or marking around the neck of any animal