This document defines and describes different types of adverbs. It states that adverbs modify verbs, adjectives, and other adverbs. Adverbs are classified into three main kinds: simple adverbs, interrogative adverbs, and relative or conjunctive adverbs. Simple adverbs further include adverbs of time, place, manner, degree, number, order, and cause and effect. Interrogative adverbs are used to ask questions about time, place, number, condition, cause, and quantity. Relative adverbs join two sentences, while conjunctive adverbs are used without an antecedent. The document also discusses other adverb forms such as prepositional adverbs and compound adverbs.