threesome vs deuce-ace

threesome and deuce-ace both are nouns.

Word	Noun	Adjective	Verb	Adverb
threesome	Yes	No	No	No
deuce-ace	Yes	No	No	No

As nouns, threesome and deuce-ace are synonyms defined as:

threesome and deuce-ace: the cardinal number that is the sum of one and one and one

Other synonyms of threesome include 3, III, leash, tercet, ternary, ternion, terzetto, three, tierce, trey, triad, trine, trinity, trio, triplet, troika.

threesome (noun)	deuce-ace (noun)
three people considered as a unit	the cardinal number that is the sum of one and one and one
the cardinal number that is the sum of one and one and one