This is how I perceive it in more concrete terms.
Fill a pot with cold water. The water does not move, unless we move the pot. Now, boil the water. When the water is boiling, it seems to be moving around and jumping, even though we are not moving the pot, because heat energy is being supplied to it.
Movement is a kind of activity, so heat promotes activity. Cold is the opposite of heat, so cold promotes inactivity or passivity.
Moisture and Dryness. Add some milk to a cup of black coffee. Stir the mixture. What usually happens is that the previously black coffee will turn dark brown or light brown. We have successfully combined milk with coffee. This is possible because being liquids, they are moist/wet.
Now, pour some milk and coffee onto an ice cube dispenser separately, and freeze the liquids. Dispense the milk cubes and coffee cubes into a cup. Stir them. They will not mix, rather, they will remain as separate cubes (until they melt). This is because they are solid and dry, so they remain separate from each other.