What is difference between illusion and hallucination?

Related questions

1. Does a delusional person know they are delusional?
2. Why does illusion occur?
3. What's the difference between a delusion and a hallucination?
4. What is an example of an allusion?
5. What does illusions of grandeur mean?
6. What is an illusion in literary terms?
7. What causes illusion?
8. What is delusional disorder?
9. What does illusion mean in art?
10. What is a false illusion?

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1. #those
2. #originates
3. #hallucination
4. #difference
5. #state
6. #incorrect
7. #exception
8. #altered
9. #false
10. #terms
11. #perception
12. #caused
13. #illusion
14. #between
15. #mental
16. #imply
17. #within
18. #outside
19. #basic
20. #something