Difference between Flak and Antiaircraft

What is the difference between Flak and Antiaircraft?

Flak as a noun is ground-based anti-aircraft guns firing explosive shells. while Antiaircraft as a noun is antiaircraft artillery.

Part of speech: noun

Definition: Ground-based anti-aircraft guns firing explosive shells. Anti-aircraft shell fire. Adverse criticism. A public-relations spokesperson.

Part of speech: adjective

Definition: Intended to attack aircraft.

Part of speech: noun

Definition: Antiaircraft artillery.An antiaircraft artillery organization.Antiaircraft fire.

We hope you now know whether to use Flak or Antiaircraft in your sentence.