Difference between Antiaircraft Gun and Antiaircraft

ANTIAIRCRAFT GUN vs ANTIAIRCRAFT: NOUN

Intended to attack aircraft.
Designed for defense, especially from a surface position, against aircraft or missile attack.
Designed for defense from a surface position against air attack

Gatling gun, Thompson submachine gun, Minie ball, Garand rifle, Minimi, Cannoneers, Rocket launcher, Antitank, Gun emplacement, Submachine, Pom pom, Ack ack gun, Ack ack, Flak, Antiaircraft

Surface to air, Anti aircraft, Air raid, High, Gao, Empty, Defense, Air, Artillery, Pom pom, Ack ack gun, Ack ack, Flak, Defensive, Antiaircraft gun

Cluster bomblet, Antiaircraft fire, Artillery, Gatling gun, Thompson submachine gun, Minie ball, Garand rifle, Minimi, Cannoneers, Rocket launcher, Antitank, Gun emplacement, Submachine, Flak, Antiaircraft

Munition, Antisubmarine, Antitank, Surface to air, Anti aircraft, Air raid, High, Gao, Empty, Defense, Air, Artillery, Flak, Defensive, Antiaircraft gun

America under Siege new antiaircraft gun from a factory where he worked.
French POWs were digging trenches and building antiaircraft gun emplacements, as well.

American spy plane designed to be invulnerable to normal antiaircraft fire.
Residential buildings in the Bab Amr neighborhood of Homs were shelled by tanks and antiaircraft guns.
Air Force, and artillery stongpointsj which are usually centered on antiaircraft batteries or signal installations.
He felt dull thuds in his gut, from heavy antiaircraft guns far off.
French POWs were digging trenches and building antiaircraft gun emplacements, as well.
Shading his eyes, but at the cost of weakened interlocking antiaircraft fire.
In addition, the intense antiaircraft fire also could have created considerable debris.
America under Siege new antiaircraft gun from a factory where he worked.
Antiaircraft shells burst around him until he climbed out of range.
Destroyer Battalion, and Jeeps mounting machine guns for antiaircraft defense.