The melting point is the temperature a substance must reach to go into its liquid phase (or solid) and a boiling point is the temperature a substance must reach to go into its gas phase (or liquid). For example, water must be 0ºC to melt or freeze and 100ºC to boil.
The melting point is a certain temperature a thing has to be at to melt or to turn into a liquid and the boiling point is the same thing its just with gas