Currently, there are 5 states or phases of Matter; SOLID, LIQUID, GAS, PLASMA and Bose-Einstein condensates.

What are the differences between the 4 phases?
Solid refers to objects that has a defined shape and volume. Examples, are smartphones, wood, computers etc.
Liquid refers to objects that has indefinite shape (it takes the shape of its container) and a defined volume. Examples, water, oil etc.
Gas refers to objects that has both indefinite shape and volume. Examples, oxygen, air etc.
Plasma is a hot gaseous objects that are made up of ions. Particles moves here very fast. Example, lightning.
Bose-Einstein condensates is a man made state of matter, in which it is the opposite of the 4th state of matter. Particles moves here very slow.

But states of matter isn't permanent. Temperature and pressure plays a role in changing the state of a matter. Example, when an ice is exposed in a high temperature, it'll melt and changes from solid to liquid. When water is exposed into a freezing temperature, it'll freeze and changes from liquid to solid.