What does HR diagram represent?

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Tags

1. #scatter
2. #temperatures
3. #absolute
4. #russell
5. #luminosities
6. #between
7. #classifications
8. #showing
9. #diagram
10. #hertzsprung
11. #relationship
12. #effective
13. #their
14. #stellar
15. #magnitudes
16. #abbreviated
17. #stars
18. #versus