Proper nouns are specific names of people, places, or things. They are always capitalized.
Examples of proper nouns:
* People: John, Mary, Queen Elizabeth II
* Places: London, Mount Everest, California
* Things: iPhone, Mona Lisa, The Great Wall of China
"She" is a pronoun, which is a word that replaces a noun. It is a general term and does not refer to a specific person.
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