Diagrammatic representation of the interconversion of the 3 states of matter:

Fusion: The transition of a substance from its solid state to its liquid state is known as fusion.

Vaporisation: The transition of a liquid into its gaseous state is known as vaporization.

Condensation: The conversion of a gas into its liquid state when the temperature is lowered is known as condensation.

Solidification: The transition of a substance from its liquid to its solid state is known as solidification.

Sublimation: The direct vaporization of a solid into its liquid state is known as sublimation.