trio vs digit

trio and digit both are nouns.

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

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

Other hypernyms of trio include figure.

trio (noun)	digit (noun)
a musical composition for three performers	a finger or toe in human beings or corresponding body part in other vertebrates
three people considered as a unit	one of the elements that collectively form a system of numeration
a set of three similar things considered as a unit	the length of breadth of a finger used as a linear measure
three performers or singers who perform together
the cardinal number that is the sum of one and one and one