Adverbs are usually used to describe a verb. In other words, they describe actions and add more detail. Adverbs can describe how something is being done (quickly, badly, etc) and when, where or how ...

I am gladly, fully, openly in support of adverbs. Despite our democratic ideals, schoolchildren throughout America learn that not all words are created equal: Nouns and verbs make sense of the world, ...

An essential relative clause provides necessary, defining information about the noun. On the other hand, non‐ essential relative clauses provide additional, non‐necessary information about the noun.