Why is it called gum tree?

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Tags

1. #commonly
2. #exude
3. #break
4. #corymbia
5. #means
6. #genera
7. #three
8. #known
9. #eucalyptus
10. #angophora
11. #being
12. #trees
13. #eucalypts
14. #similar
15. #copious
16. #scribbly
17. #species
18. #referred
19. #though
20. #because
21. #others