band vs collar

band and collar both are nouns.

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

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

band: a thin flat strip of flexible material that is worn around the body or one of the limbs (especially to decorate the body)
collar: a band that fits around the neck and is usually folded over

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

band: a stripe or stripes of contrasting color
collar: (zoology) an encircling band or marking around the neck of any animal

Other hyponyms of band include stretch mark.

band (noun)	collar (noun)
a thin flat strip of flexible material that is worn around the body or one of the limbs (especially to decorate the body)	the act of apprehending (especially apprehending a criminal)
an adornment consisting of a strip of a contrasting color or material	a figurative restraint
a restraint put around something to hold it together	a band that fits around the neck and is usually folded over
jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger	necklace that fits tightly around a woman's neck
a strip of material attached to the leg of a bird to identify it (as in studies of bird migration)	a band of leather or rope that is placed around an animal's neck as a harness or to identify it
a thin flat strip or loop of flexible material that goes around or over something else, typically to hold it together or as a decoration	the stitching that forms the rim of a shoe or boot
a driving belt in machinery	a short ring fastened over a rod or shaft to limit, guide, or secure a machine part
a stripe or stripes of contrasting color	anything worn or placed about the neck
a cord-like tissue connecting two larger parts of an anatomical structure	(zoology) an encircling band or marking around the neck of any animal
a range of frequencies between two limits
instrumentalists not including string players
an unofficial association of people or groups
a group of musicians playing popular music for dancing

band (verb)	collar (verb)
bind or tie together, as with a band	take into custody
attach a ring to the foot of, in order to identify	furnish with a collar
	seize by the neck or collar