"Harry Potter and the Sorcerer's Stone" is the full title of the first book in the Harry Potter series. It's a long and complex story about a young wizard named Harry Potter who discovers he's a wizard and attends Hogwarts School of Witchcraft and Wizardry.
"Stone" is too vague of a title to refer to the Harry Potter book. It could refer to many things, including:
* The Sorcerer's Stone: The magical artifact in the book.
* A different book: There might be a book with the title "Stone" out there.
* A different story altogether: "Stone" could refer to a story, movie, or anything else that involves the concept of a stone.
Therefore, "Harry Potter and the Sorcerer's Stone" is not the same as "Stone." The former is a specific book with a specific title, while the latter is a vague term that could refer to many things.