"Rank" in tennis is your overall rank in the world in the current season. "Seed" is your rank only in a specific tournament.
It is called a seed because of the analogy with plants where the seed might grow into a top rank at the end of that tournament, or the seed might instead wither away. Players/teams are 'planted' into the bracket in a manner that is typically intended so that the best don't meet until later in the competition.
Tennis rackets used on tour, by the professional players
tennis is the low-cut sport trainers, which used to be white, used by tennis players.
One of the meaning of the word seed, when it comes to sports, is 'a ranking of teams or players for a specific purpose'. So, as far as sports are concerned, the words seed and rank are synonymous. The use of "seed" or "seeding" was common in tennis in the late 1800s. It was used to describe the act of spreading or "seeding" the best players throughout the tournament in order to keep the best players from meeting/playing early on. The "seeded" players were those of higher skill and thus the term became synonymous with ranking. The term is also used in terms of "seeding" a deck of cards; spreading the most desirable cards throughout a deck so as to not have them all appear at once.
Tennis players use various kinds of equipment while training. The most important of which would be the tennis racket which may be used with or without a leather grip.
In a typical tennis match, players use between 6 to 12 tennis balls.
To Seed the players at events and help with the draw
Tennis is played all over the world by every age, race and sex. Tennis is played on a tennis court located anywhere there are tennis players.
1873, a development on hitting the ball with your hand
A lobster tennis machine has several different uses, not just for tennis. It can tone you, naturally, in tennis, but also in baseball, field hockey, or even football. It is a machine that throws balls at you at a different speed, and the speed is one that you can set from slow to fast. They can be used for training or just for keeping up your sport.
Tennis balls are sed to play the game of Tennis. Tennis is a game played on a rectangular court by two players or two pairs of players equipped with rackets, in which a ball is driven back and forth over a low net that divides the court in half. Jasmine :)
They get thrown away or given to a family member if wanted.