foursome vs digit

foursome and digit both are nouns.

Word	Noun	Adjective	Verb	Adverb
foursome	Yes	No	No	No
digit	Yes	No	No	No

As nouns, digit is a hypernym of foursome; that is, digit is a word with a broader meaning than foursome:

Other hypernyms of foursome include figure.

foursome (noun)	digit (noun)
four people considered as a unit	a finger or toe in human beings or corresponding body part in other vertebrates
the cardinal number that is the sum of three and one	one of the elements that collectively form a system of numeration
	the length of breadth of a finger used as a linear measure