* Cumulus: These are the puffy clouds that are often seen on a nice day. They are usually white and have a flat base.

* Stratocumulus: These are clouds that are made up of layers of cumulus clouds. They are usually gray and have a wavy appearance.

* Altocumulus: These are clouds that are made up of layers of cumulus clouds that are higher in the sky. They are usually white or gray and have a wavy appearance.

* Cirrocumulus: These are clouds that are made up of layers of ice crystals. They are usually white and have a wavy appearance.

* Cumulonimbus: These are clouds that are tall and puffy and have a dark base. They are often associated with thunderstorms.

* Nimbostratus: These are clouds that are dark and thick and cover the entire sky. They are often associated with rain or snow.