Cloud up and Clouding up

Cloud up verb - Become covered with clouds.

Clouding up is a synonym for cloud up. In some cases you can replace phrase "Clouding up" with "Cloud up", this terms are similar.

Clouding up noun - The process whereby water particles become visible in the sky.

Cloud up is a synonym for clouding up in unlit topic. You can use "Cloud up" instead a verb phrase "Clouding up", if it concerns topics such as scowl, shut out the light.