What makes starry night and the scream examples of expressionism?

Related questions

1. What happened to Van Gogh's paintings after he died?
2. Who owns the starry night?
3. What is the story behind the painting Starry Night?
4. Did Van Gogh ever sell a painting in his lifetime?
5. How much is a Van Gogh worth?
6. What's the most expensive van Gogh painting?
7. How many Van Gogh paintings are missing?
8. Why did Van Gogh paint Starry Night?
9. What is the texture of starry night?
10. Is Starry Night an impressionist?

Tags

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4. #which
5. #artworks
6. #woman
7. #demonstrating
8. #vehicle
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12. #personal
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14. #canvas
15. #paintings
16. #include
17. #schiele
18. #passionate
19. #highly
20. #concept
21. #movement
22. #painter
23. #feelings
24. #based
25. #night
26. #famous