Little Joe vs foursome

Little Joe and foursome both are nouns.

Word	Noun	Adjective	Verb	Adverb
Little Joe	Yes	No	No	No
foursome	Yes	No	No	No

As nouns, Little Joe and foursome are synonyms defined as:

Little Joe and foursome: the cardinal number that is the sum of three and one

Other synonyms of Little Joe include 4, four, IV, quadruplet, quartet, quatern, quaternary, quaternion, quaternity, tetrad.

Little Joe (noun)	foursome (noun)
the cardinal number that is the sum of three and one	four people considered as a unit
	the cardinal number that is the sum of three and one