Mists (UP) is a type of fog that is formed when tiny droplets of water condense in the air. It is usually seen in the morning or evening, and is often associated with a damp, humid atmosphere. Fogs (4 letters) is another type of fog that is created when water vapor condenses into tiny droplets of water that are suspended in the air. Fogs are usually denser than mists, and can be seen during any time of day.