Here's why:
* Adverbs modify verbs, adjectives, or other adverbs. They tell us how, when, where, or to what extent something happens.
* Examples:
* "I would rather stay home." (modifies the verb "stay")
* "It was a rather cold day." (modifies the adjective "cold")
* "He walked rather slowly." (modifies the adverb "slowly")
Let me know if you have any other words you'd like to analyze!