What type of word is used to describe the intensity of an action?

An adverb is a type of word that modifies verbs, adjectives, or other adverbs, often expressing the intensity or degree of an action. In this context, adverbs are specifically used to describe how, when, where, or to what extent an action occurs. For example, in a sentence like "She runs quickly," the adverb "quickly" indicates the intensity of the action of running.

In contrast, pronouns serve to replace nouns and don't provide intensity. Verbs are action words but do not describe the intensity themselves; they convey the action taken. Adjectives modify nouns, providing details about them, but they do not pertain directly to the intensity of actions. Therefore, the term that accurately describes the intensity of an action is indeed the adverb.