Yes, the catcher typically signals to the pitcher what pitch to throw by using a series of hand signals.
the catcher
The pitcher in baseball trys to throw the ball to the back catcher who is behind the home plate.
A catcher tells the pitcher what kinds of pitches to throw. Also, if the pitcher throws a bad pitch, the catcher can prevent the keep the ball close to prevent any base runner advancements.
The player who gives signals to the pitcher is called the catcher. Their role is to communicate with the pitcher and suggest what type of pitch to throw based on the game situation and the strengths of the pitcher and the batter.
sometimes the manager gives the catcher signs from the dugout. the catcher gives the sign to the pitcher what he recommends if he doesn't get a sign from the dugout. in the end, obviously, the pitcher has the final descision on what he wants to throw, but as the level of play increases, pitch calling becomes more dependent on the catcher.
A catcher will put whiteout on his fingernails when the pitcher is having trouble seeing the signs the catcher is giving for what pitch to throw.
I think you are asking what they form. If that is what you want to know, they are called "The Battery," because they work together to try and get the batter out. The catcher makes hand signals for the pitcher to see telling him what type of pitch to throw. The pitcher will either nod or shake his head to let the catcher know if that is the pitch he wants to deliver or not.
Mostly the catcher, although the manager has some say, and of course the pitcher is the one who actually has the final say in which pitch is ultimately thrown.
umpire
no
The catcher signals the pitcher by using a series of hand signals to communicate the type of pitch to be thrown. These signals are typically given through a combination of finger placements and movements, which the pitcher can see from the mound. This helps the pitcher know what pitch to throw without the opposing team being able to anticipate it.
A wild throw is usually when the ball is no where near where the catcher called for the ball to be.