Comparing The Book Harry Potter And The Sorcerer's Stone

Lots of stories have kids as main characters, but how does the story change when the kid is an orphan. I have read Harry Potter and The Sorcerer's Stone, and The Graveyard Book. In these books, one of the main characters is an orphan. In Harry Potter, Harry has to live with his Muggle Aunt, Uncle, and cousin who torture him. He also finds out that he is a wizard, and is going to Hogwarts a school for wizards. He also faced Voldemort who killed his parents for the second time. He learned about his father and mother and how they were killed. He learned spells, potions, and how to fly on a broomstick. He even became the youngest seeker. In The Graveyard Book, Bod became an orphan when The Man Jack killed his sister and parents. He escaped by climbing