Deuce
The word comes from the French phrase deux, which means "at two" (as in needing two more points to win). Also, there is a Latin prefix in it (du) which mean two; twice.
égalité is a French word, and 'deuce' isn't.
The typical sport that uses the term, "deuce", is Tennis or Table Tennis.
In tennis, when both opponents are tied at 40-40, the score is called deuce. Deuce changes to advantage when one opponent scores after achieving deuce.
Deuce is where both players are on 40 in a match of tennis
tennis
The term is called "Deuce."
40:40 Deuce in Tennis
4040 is deuce in tennis
40-40
Deuce.