Clouds are water liquid, not vapour, why it don't fall down?

[Psychophanta]

Title says all,
why clouds are up? have the air more density than water?

Thanks!

 

[cesiumfrog]

Same reason that smoke rises despite soot being heavier than air.

 

[LURCH]

Although clouds are made of water droplets and ice chrystals, these droplets are very small. Many clouds form as a result of updrafts. These updrafts are more than strong enough to keep such tiny droplets aloft.