teething ring vs comforter

teething ring and comforter both are nouns.

Word	Noun	Adjective	Verb	Adverb
teething ring	Yes	No	No	No
comforter	Yes	No	No	No

As nouns, teething ring and comforter are synonyms defined as:

teething ring and comforter: device used for an infant to suck or bite on

Other synonyms of teething ring include baby's dummy, pacifier.

teething ring (noun)	comforter (noun)
device used for an infant to suck or bite on	bedding made of two layers of cloth filled with stuffing and stitched together
	device used for an infant to suck or bite on
	a person who commiserates with someone who has had misfortune
	a person who reduces the intensity (e.g., of fears) and calms and pacifies