What's the opposite of vaporization

Condensation. Remember, Vaporization happens when energy is taken in (enfothermic) the opposite will be the process that releases energy (exothermic) which will be condensation. Put ice in a glass of water. the ice melts, taking in energy from the water in the glass, which in turn takes heat energy away from the vapor in the surrounding air, thus causing the water vapor in the air to condense.

Condensation is the opposite