Charging - When an offensive player runs into a defender who has established position.
a charge (or Charging)
That would be a blocking foul.
It's called an Offensive Charge.
A foul in basketball can range from two different kinds: offensive and defensive fouls, as well as technical fouls. Offensive fouls are fouls when you are on the offensive end, like pushing someone to the side to shoot or pushing slapping someone on the arm to get to the basket. Defensive fouls are the same, but on the defensive end. Technical fouls are called when you do something improper in basketball. For instance, yelling at the referee, throwing the basketball in the stands, and yelling at other players will result in technical fouls. There are offensive and defensive fouls in basketball. A defensive foul occurs when a defender makes contact with the player in possession. An offensive foul occurs when the player with the ball makes contact with a defender who's arms are inside his body. If an offensive player runs into a defensive player whose position is established (both feet are planted) or the offensive player drops his shoulder or pushes off with his arm, then the contact is deemed an offensive foul (foul against the offensive player) and is usually called a "charge." Flagrant fouls occur when one player grabs another and pulls him down, or a player is injured as a result of a hard foul. Technical fouls include defensive three-second penalties and, at the discretion of the official, when a player or coach exhibits unsportsmanlike conduct. By definition a foul is "when one player gains an illegal advantage over another through physical contact". In layman's terms, physical contact between two players is not illegal. However, if that contact creates an advantage (as in a shot was affected or a player could not move freely to another position on the court) then it is deemed a foul. If you are Thomas Robinson from the University of Kansas apparently all you have to do to be called for a foul is be on the court.
I think you mean charging, which is when an offensive player commits a foul on the defensive player. Typically, this happens when the defensive player plants his feet and the offensive player runs/dribbles/pushes through him, knocking him down. It's not a charge if his feet are moving, though.
A screen in basketball is when one man on your team free's up another player on your team by 'blocking' the defender as your teammate runs of the screen or 'block.' When setting the screen, you are not allowed to move your feet, otherwise it is an illegal screen and an offensive foul. After the screen has been set, the player is freed from his defending to dribble or shoot with extra space.
When the defense matches up with the offense in a way where one defender runs around with one offensive player. The defender basically has no help from any of his teammates in running with (covering) the offender. Usually, big plays happen in Man coverage.