clerical collar vs dog collar

clerical collar and dog collar both are nouns.

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

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

clerical collar and dog collar: a stiff white collar with no opening in the front; a distinctive symbol of the clergy

Other synonyms of clerical collar include Roman collar.

clerical collar (noun)	dog collar (noun)
a stiff white collar with no opening in the front; a distinctive symbol of the clergy	a collar for a dog
	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