An explosion is a sudden, rapid, and intense release of energy, while an implosion is an inward collapse of matter. Explosions occur when a large amount of energy is released in a short amount of time. The energy is released outward in all directions, resulting in an increase in temperature, pressure, and sound. Examples of explosions include fireworks, explosions of bombs and other explosives, and volcanic eruptions.
Implosions involve the inward collapse of matter, usually due to a decrease in pressure in the surrounding environment. This can cause the material to collapse in on itself, resulting in a decrease in temperature, pressure, and sound. Examples of implosions include the collapse of a building due to a decrease in air pressure caused by a vacuum, the collapse of a star due to its own gravity, and the collapse of a black hole due to the intense gravity.