A cloud is a mass of water vapor that floats in the [[sky]].

h4. See also

* [[cloud focus]]
* [[cloudy sky]], a sky mostly filled with clouds
* [[overcast]], a sky completely covered with clouds
* [[dark clouds]]
* [[above clouds]]
* [[cumulonimbus cloud]], a dense, towering vertical cloud
* [[fallstreak hole]], a large gap in cirrocumulus or altocumulus clouds
* [[egasumi]], a traditional Japanese pattern of stylized clouds
* [[xiangyun]], a traditional manner of stylizing clouds with swirls
* [[contrail]], an airplane-created cloud trail
* [[distrail]], an empty trail left in a cloud by an airplane
* [[flying nimbus]], a magical cloud used as a transportation device
雲 くも