Clouds are classified into three general categories. Low Level, Medium Level, High Level, and Vertical Development Cloud.
Low Level:
- Stratus
- Nimbostratus
Medium Level
- Altostratus
- Altocumulus
High Level
- Cirrus
- Cirrostratus
- Cirrocumulus
Vertical Development Cloud
- Cumulus
- Cumulonimbus

The word "strato" means layer, while "alto" means middle. "Nimbo" comes from the word nimbus meaning rain-bearing cloud. "Cirro" comes from the word Cirrus, meaning 'wisp of hair'.
I have included pictures according to the names above. So the next time you go out for a walk and look into the sky, you will be able to name the clouds you see!

Cirrus

Cirrostratus
Cumulus









