What is the difference between estimate and guesstimate?

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Tags

1. #calculation
2. #informal
3. #based
4. #better
5. #rough
6. #unreliable
7. #often
8. #insufficient
9. #guess
10. #between
11. #estimate
12. #because
13. #guesstimate
14. #nouns
15. #hardly
16. #while
17. #difference