Fuel
In short
Fuel is any material that can be processed to release energy, typically in the form of heat or power.
In plain words
It is something you burn or use to make things work. This energy can move cars, heat homes, or run large factories.
A simple example
Petrol is used to power a car engine, while wood is burned in a fireplace to provide warmth.
Why it matters
Most modern transport, heating, and electricity systems rely on fuel to function. Finding cleaner types of fuel is vital for protecting the environment.
Easy to mix up
People sometimes confuse fuel with energy itself, but fuel is the physical substance used to produce the energy.