Guarding by area. The other common defense is called guarding by player in which each person covers a specific player from the opposing team.(Zone Technique)
It is called defensive offsides. If the defensive player enters the neutral zone and makes contact with an opponent before the ball is snapped, it is called encroachment.
It was called the "46 Defense" after the jersey number of defensive back Doug Plank.
The so-called Flat Tax.
Defensive End. The DE plays on the outside edge of the defensive line. Called the Defensive End in a 4-3 allignment and is sometimes referred to as a Defensive Tackle in a 3-4 defensive allignment. The Defensive end is responsible for pass rushing and run stuffing.
The 'secondary' are those players on the defense that play in the backfield and cover receivers and backs going out on pass patterns. The secondary consists of two cornerbacks and two safeties and are commonly called 'defensive backs'. Sometimes, when the defense thinks the offense is going to run a pass play, a fifth defensive back will be put into the game to replace a defensive lineman or linebacker. In this case, you might hear the announcer say that the defense is in the 'nickel'. A 'nickel defense' is when there are five defensive backs playing on a particular play.
Yes, defensive holding can be called when one of the defenders - usually a defensive back - holds onto a receiver and prevents him from running his route. Think of it as a minor pass interference. Defensive holding is a 10 yard penalty.
This is a big difference= A defensive back is actually a player who, instead of rushing the carrier, stays back and covers the receiving offense. The defensive back is not always defensive. Say the defensive team is running the ball. The defense will want to blitz, sending the defensive back through the defensive line. A safety is actually a rule. When the offensive team is making a play, if the runner is tackled inside their own endzone, a safety is called. This means that the offensive team MUST punt the ball to the defense.
In American football, when a defender catches a forward pass from the offense, it is called an interception.
The foul is called "roughing the passer" and the penalty is 15 yards against the defense.
Tower defense, which is a subgenre of real-time strategy games.
They are grouped into positions. Those positions are called attack (offensive half) defense midi (both offensive and defensive players).
The United States and Canada are part of a number of defensive-related alliances. Besides both being part of NATO, they share air defenses with NORAD, and the Permanent Joint Board of Defense.