Adjectives modify nouns or pronouns. They usually come before the word they modify; occasionally they function as complements following the word they modify. Adverbs modify verbs, adjectives, or other adverbs. (See 46d and 46e.)

Many adverbs are formed by adding -ly to adjectives (normal, normally; smooth, smoothly). But don’t assume that all words ending in -ly are adverbs or that all adverbs end in -ly. Some adjectives end in -ly (lovely, friendly), and some adverbs don’t (always, here, there). When in doubt, consult a dictionary.