fires

Causes a mechanism to ignite or activate, often starting combustion or a process.

"The engine fires up quickly."

Terminates someone's employment, often due to poor performance or misconduct.

"The company fires underperforming staff."

Propels a projectile from a weapon or device with force.

"He fires his rifle."

Destructive burning events, often large and uncontrolled, or controlled burning for warmth.

"Forest fires spread rapidly."