What is the difference between synchronous & asynchronous task in iOS?

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Tags

1. #notify
2. #tasks
3. #means
4. #synchronous
5. #initiated
6. #multiple
7. #perform
8. #continuing
9. #thread
10. #completes
11. #asynchronous
12. #block
13. #complete
14. #background
15. #before
16. #finish
17. #operation
18. #threads
19. #swift