This document discusses different types of clouds classified based on their height and appearance. It introduces five main cloud classifications: cirrus (high), stratus (layer), cumulus (heap), alto (mid), and nimbus (rain). Cirrus clouds are thin and wispy, while stratus clouds are wispy and sheet-like. Cumulus clouds have vertical development and distinct edges. Nimbus clouds are rain clouds or storms. The document provides the Latin roots of the cloud classifications.