trio vs trey

trio and trey both are nouns.

Word	Noun	Adjective	Verb	Adverb
trio	Yes	No	No	No
trey	Yes	No	No	No

As nouns, trio and trey are synonyms defined as:

trio and trey: the cardinal number that is the sum of one and one and one

trio (noun)	trey (noun)
a musical composition for three performers	one of four playing cards in a deck having three pips
three people considered as a unit	the cardinal number that is the sum of one and one and one
a set of three similar things considered as a unit
three performers or singers who perform together
the cardinal number that is the sum of one and one and one