knucklebones vs jacks

knucklebones and jacks both are nouns.

Word	Noun	Adjective	Verb	Adverb
knucklebones	Yes	No	No	No
jacks	Yes	No	No	No

As nouns, knucklebones and jacks are synonyms defined as:

knucklebones and jacks: a game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball

Other synonyms of knucklebones include jackstones.

knucklebones (noun)	jacks (noun)
a game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball	a game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball