Serve
The person who returned in the 6-5 game will serve first in the tie-break.
Losing your serve is when you lose the game in which you were serving, it is said the oppenent (whoever that may be) broke someones (whoever was servings) serve. If you win the game then you held your serve.
There is no "term" for the start of a tennis match. After the players' warm-up has completed, professional tennis matches officially begin when the chair umpire says, "play." Amateur and unofficiated matches usually begin by the server asking the receiver if he/she is "ready".
A serve in tennis is when you have the ball to start a game. For instance, the score is 3-4 games, you with 3 games won, and it is your turn to serve. A serve is when you hit the ball on the opposite side of the court in the square. Example: Standing on the right side to serve, you hit it in the square on the left side.
When it finishes or when you are versing a new person.
Not all tennis player do this but when you see this happen the tennis player is seeing which ones they want. Most tennis players take two balls before a serve take one to serve and keep the other one in his/her pocket in case he/she misses his first serve, then he has a extra ball to hit.
The game of table tennis has its roots in lawn tennis. When lawn tennis became very popular in the 1870s & 1880s, game makers tried to emulate its' success by developing indoor versions of the game. David Foster of England introduced the first action game of tennis on a table in 1890.
Badminton is a game kind of like tennis, except the rackets are not as wide and a LOT lighter. Also, instead of tennis balls that bounce, you use shuttles. The rules are if the ball bounces even once inside the court, the person who hit the ball gets a point. Also, you don't serve the ball like in tennis.
There is no penalty unless the server causes a delay of game.
In tennis matches, it is more common to win games while serving rather than while the other player is serving. So, when both players are winning their own serve games (holding serve) the set is said to be "on serve." When a player wins a game as a receiver, that player is said to have broken the opponent's serve and is now "up a break." If the other player is able to "break back" the score again appears as if nobody lost their serve game, and the set is "back on serve."
The same player serves for all of each game and they swap on a rotation basis until the end.