collar vs rebato

collar and rebato both are nouns.

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

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

collar (noun)	rebato (noun)
the act of apprehending (especially apprehending a criminal)	a wired or starched collar of intricate lace; worn in 17th century
a figurative restraint
a band that fits around the neck and is usually folded over
necklace that fits tightly around a woman's neck
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