Here's a breakdown:

* Boiling: When water reaches its boiling point (100°C or 212°F), the water molecules gain enough energy to overcome the forces holding them together in a liquid state.

* Evaporation: The water molecules at the surface, having the most energy, break free from the liquid and enter the air as water vapor.

While boiling specifically refers to the rapid vaporization of a liquid at its boiling point, evaporation is a more general term that encompasses the gradual change from liquid to vapor at any temperature.