threesome vs leash

threesome and leash both are nouns.

Word	Noun	Adjective	Verb	Adverb
threesome	Yes	No	No	No
leash	Yes	No	Yes	No

As nouns, threesome and leash are synonyms defined as:

threesome and leash: the cardinal number that is the sum of one and one and one

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

threesome (noun)	leash (noun)
three people considered as a unit	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

threesome (verb)	leash (verb)
	fasten with a rope