Terms used to describe the period of time and the state of the world before and after the attack, regarding 9/11 as an epoch. They are often used to denote foreign policy and domestic security measures as they existed before or after the attacks.
Ground zero is generic term for the point on the Earth's surface closest to a detonation. Capitalized, it is shorthand for the World Trade Center site; used for example in "Ground Zero mosque" a pejorative for the Cordoba House or Park51 Islamic center.
the excavated foundations of the World Trade Center. Although not a new term, it gained prominence during rescue, cleanup and ongoing reconstruction efforts.
the rubble of the collapsed World Trade Center.
A jumper is someone who commits suicide by jumping from a height. It is unclear which of the "jumpers" seen falling from the WTC had jumped and which fell while trying to climb to safety. The medical examiner's office ruled homicide for all bodies, unable to distinguish jumpers from those who died inside the towers. "The Falling Man" is an iconic photograph of a jumper.
Various slogans and captions were employed by media outlets to brand coverage of the September 11th terrorist attack, its after effects, and the U.S. government response. The slogans for American media were typically positioned on the bottom third of television broadcasts, or as banners across the top of newspaper pages. Designs typically incorporated a patriotic red, white, and blue motif, along with an explicit graphic of the American flag. Examples include:
War on Terrorism (also Global War on Terror) refers to the political response from the U. S. Government to the attacks of 9/11 and includes the invasions of Afghanistan and Iraq, the color-coded national threat condition reporting system, the Patriot Act, and the prison camp in Guantánamo Bay, Cuba.
Enduring Freedom – name for US-led military response in Afghanistan, Philippines, Horn of Africa, and Trans Sahara.
Infinite Justice – original name for US-led military response, dropped after religious overtones were pointed out by a reporter at a press briefing