energy

Power that makes things move or produces heat, light, or electricity.

• The sun gives us energy.
• The factory uses energy from wind turbines.
• Turning off unused lights saves energy.

Similar words: power

Common phrases: solar energy, energy source, save energy

The force that makes movement or activity happen.

• Curiosity provided the energy behind their work.
• The writer described love as the energy driving human life.
• A shared purpose gave energy to the movement.

Similar words: driving force, impetus

Common phrases: creative energy, driving energy, energy behind something

A measurable amount showing how much work a physical system can do.

• Energy is measured in joules.
• We calculated the ball's kinetic energy.
• The system's total energy remained constant.

Common phrases: kinetic energy, potential energy, energy conservation