trio vs triumvirate

trio and triumvirate both are nouns.

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

As nouns, triumvirate is a hyponym of trio; that is, triumvirate is a word with a more specific, narrower meaning than trio:

trio: three people considered as a unit
triumvirate: a group of three men responsible for public administration or civil authority

trio (noun)	triumvirate (noun)
a musical composition for three performers	a group of three men responsible for public administration or civil authority
three people considered as a unit
a set of three similar things considered as a unit
three performers or singers who perform together
the cardinal number that is the sum of one and one and one