Appositive/appositive phrase is a noun/a noun phrase that remains another noun or a pronoun. There are two types of appositive phrases: restrictive (provides essential information about the noun it renames) and non-restrictive ( gives us more details about the renamed noun. Another important feature is that non-restrictive appositive phrases are always separated with commas from the rest of the sentence.
So, in this case, our appositive phrase is the book by E.B. White, and the noun it renames is Charlotte's Web. It is separated with commas and gives us more details about the renamed noun which makes it non-restrictive appositive phrase.
Romeo feels his l0ve for Juliet has weakened his courage. “O swe-et Juliet, your beauty has made me act like a woman and weakened my courage” (3.1. 104-106).
