The document defines and describes adjectives. The main points are:
1. Adjectives are words that describe or modify nouns, answering questions like "what kind?" or "how many?". They can be used attributively or predicatively.
2. Adjectives are classified into categories including adjectives of quality, quantity, number, demonstrative, interrogative, emphasizing, and exclamatory.
3. Adjectives are compared in degrees - positive, comparative, and superlative - to show levels of a quality. Most adjectives form the comparative by adding "-er" and superlative by adding "-est".