The term is called "Deuce."
Deuce
Love means "0" (zero) in tennis. The word "love", itself, one is an Anglicized, misheard, interpretation of the French word "l'oeuf" (pronounced "loff" or "luff"), which means "the egg", as used in the sports term, "goose egg", meaning "nothing".
For the points 40-40 each, the term used in Tennis is 'deuce'.
The term "Love' is used in the game of tennis to refer to 0 or zero score. For example, if I were serving and had lost 2 consecutive points the score would be 0-30 or love-30. Also, at the beginnings of each set 0-0 score for both players, it can be called "love-love"
Deuce.
deuce
The typical sport that uses the term, "deuce", is Tennis or Table Tennis.
Often used as a slang term for tennis shoe.
Deuce
You might hear "forty love" in the sport of tennis. It is a term used to indicate the score in a game when one player has scored 40 points and the opponent has not scored any.
The term 'Love' is used in both Badminton and Tennis.
'40-40 player' is a term used for someone that hits 40 (or more) doubles and 40 (or more) home runs in the same season.
The noun "volley" is used as a collective noun for a volley of shots; a term used for gunfire or for tennis.