Is Shrek an ogre or a troll?

Related questions

1. What is the difference between Ogre and Troll?
2. What is Shrek's birthday?
3. What is the difference between orcs and ogres?
4. What Orge means?
5. How did Saruman breed orcs?
6. Do Onions have layers?
7. Are trolls and ogres the same?
8. Where do orcs come from?
9. Can orcs and humans mate?
10. What is a female ogre called?

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21. #trolls