Weather in Anning City, Kunming

(1) Fog is a liquefaction phenomenon, which is formed by water vapor condensing into small water droplets and combining with dust in the air.

(2) Frost is a small ice crystal that water vapor turns into when it is cold, which is a condensation phenomenon;

(3) When the temperature rises at noon on foggy days, the water droplets formed by fog absorb heat and turn into steam, which is a vaporization phenomenon.

So the answer is: liquefaction; Ninghua; evaporate