dog collar vs choker

dog collar and choker both are nouns.

Word	Noun	Adjective	Verb	Adverb
dog collar	Yes	No	No	No
choker	Yes	No	No	No

As nouns, dog collar and choker are synonyms defined as:

Other synonyms of dog collar include collar, neckband.

dog collar (noun)	choker (noun)
a collar for a dog	a high tight collar
a stiff white collar with no opening in the front; a distinctive symbol of the clergy	necklace that fits tightly around a woman's neck
necklace that fits tightly around a woman's neck	someone who kills by strangling
	an unfortunate person who is unable to perform effectively because of nervous tension or agitation