arrest vs collar

arrest and collar both are nouns.

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

As nouns, arrest and collar are synonyms defined as:

arrest and collar: the act of apprehending (especially apprehending a criminal)

Other synonyms of arrest include apprehension, catch, pinch, taking into custody.

As verbs, arrest and collar are synonyms defined as:

Other synonyms of arrest include apprehend, cop, nab, nail, pick up.

arrest (noun)	collar (noun)
the act of apprehending (especially apprehending a criminal)	the act of apprehending (especially apprehending a criminal)
the state of inactivity following an interruption	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

arrest (verb)	collar (verb)
hold back, as of a danger or an enemy; check the expansion or influence of	take into custody
take into custody	furnish with a collar
attract and fix	seize by the neck or collar
cause to come to an abrupt stop