What is the difference between formal and semi formal?

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Tags

1. #formal
2. #cocktail
3. #festive
4. #generally
5. #sunday
6. #types
7. #first
8. #visit
9. #class
10. #dress
11. #codes
12. #encompasses
13. #white
14. #while
15. #different
16. #slightly
17. #black
18. #sometimes
19. #semiformal
20. #referred
21. #relaxed