Firepower is the destructive capacity of weapons, especially in military contexts. A tank has more firepower than a rifle because it can destroy larger targets and cause more damage. An army with superior firepower can overwhelm its opponents through the sheer force and volume of its weapons.

Today, firepower refers to any weapon's destructive capability, whether it uses gunpowder, missiles, or other technology.

Outside of military contexts, people use firepower metaphorically to mean impressive capability or strength. A baseball team might have tremendous offensive firepower if several players consistently hit home runs. A lawyer might bring intellectual firepower to a difficult case, meaning she has exceptional intelligence and skill. A company launching a new product might assemble marketing firepower by hiring the best advertising experts.

The metaphorical use suggests overwhelming force or capability: you have so much strength in one area that you can overcome almost any obstacle. When someone talks about bringing more firepower to a problem, they mean adding more resources, talent, or effort to guarantee success.