collar vs neck

collar and neck both are nouns.

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

collar (noun)	neck (noun)
the act of apprehending (especially apprehending a criminal)	an opening in a garment for the neck of the wearer; a part of the garment near the wearer's neck
a figurative restraint	a narrow part of an artifact that resembles a neck in position or form
a band that fits around the neck and is usually folded over	the part of an organism (human or animal) that connects the head to the rest of the body
necklace that fits tightly around a woman's neck	a cut of meat from the neck of an animal
a band of leather or rope that is placed around an animal's neck as a harness or to identify it	a narrow elongated projecting strip of land
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

collar (verb)	neck (verb)
take into custody	kiss, embrace, or fondle with sexual passion
furnish with a collar
seize by the neck or collar