the.com/trio

Two is a couple, three is a plot — someone's always slightly outnumbered.

means A group of exactly three people or things, often performing or acting together.

from From French trio, borrowed from Italian trio, built on the Latin root tri- meaning 'three' (as in triplex or trinus). Italian musical vocabulary shaped the word's early use in English — a 'trio' named three voices or instruments playing as one unit — before it spread to mean any threesome of people or objects.

music term
also means the piece three people perform
math root
from latin tres, just dressed up in italian
social dynamic
one person is always the deciding vote
comedy rule
rule of three makes jokes land, not pairs
the.com · every word