choker vs dog collar

choker and dog collar both are nouns.

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

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

Other synonyms of choker include collar, neckband.

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