That's a great question! It touches on the fascinating nature of states of matter. Here's the breakdown:

* Air is a gas. It's a mixture of gases like nitrogen, oxygen, and others. These gases are spread out and have no fixed shape or volume.

* Clouds are made of tiny water droplets or ice crystals. These droplets are liquid water, which is a liquid state of matter.

So, while clouds are suspended in air (a gas), the clouds themselves are not made of gas.

Think of it this way: You can see clouds because the water droplets or ice crystals scatter light. You can't see air because the gas molecules are too small and spread out.