leash vs deuce-ace

leash and deuce-ace both are nouns.

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

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

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

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

leash (noun)	deuce-ace (noun)
a figurative restraint	the cardinal number that is the sum of one and one and one
restraint consisting of a rope (or light chain) used to restrain an animal
the cardinal number that is the sum of one and one and one

leash (verb)	deuce-ace (verb)
fasten with a rope