The document discusses adjectives and their grammatical properties. It defines adjectives as words that describe or modify nouns, and notes that articles are a type of adjective. It discusses the typical position of adjectives preceding nouns, and explains how adjectives can be used to indicate degrees of comparison through positive, comparative, and superlative forms. The document also covers the formation of comparative and superlative adjectives, irregular forms, premodifiers that intensify degrees, collective adjectives, opposites of adjectives, and capitalizing proper adjectives.