Anything that has mass and occupies space is known as matter.
Humans and all the things that surround them such as rocks, trees, buildings, clouds, etc. are made up of matter.
Therefore, it is important to understand matter in order to understand the world around us.
Matter Has Mass: The measure of quantity of matter contained in a substance is called mass. More the amount of matter in an object, the more is its mass.
Matter Occupies Space: Matter occupies space which means that the particles of matter move around in the space occupied by them. Everything occupies space.