Cloud
visible mass of liquid droplets or frozen crystals suspended in the atmosphere
floccus
Morning Glory cloud
pannus
thunderhead
anthropogenic cloud
Ship tracks
mid-level cloud
Saturn's hexagon
Polar stratospheric cloud
vertical multi-level clouds
high-level cloud
nimbus cloud
low-level cloud
earthquake cloud
sea of clouds
Accessory cloud
horseshoe cloud
Charged Aerosol Release Experiment
condensation cloud
Hector
cloud condensation nuclei