If you want to add the translation in your language try to keep at least the number of the english word, so you don't have to write it again - for new words, keep adding numbers. (for example: 16. gr/dt Feuerblitz)
I think, the easiest way to find the terms is to use the search menu on the explorer window (ctrl+F, for example).
Feel free to make any corrections!
If you ask yourselves what's the goal of this dictionary: I think it is a help for those, who don't know what a particular word means or how they have to translate the word in english, because they didn't read the books in english. On the other hand, you can always learn some words in other languages, thats fun for some people, I think

It is not a problem if you only add one or two words, because everybody might find them by searching the original english word or the corresponding number.
1. Baron, the Bloody

2. Beater

3. Bertie Bott's Every Flavor Beans

4. Blast-ended screwts

5. Bubotubers

6. Canary cream

7. Chaser

8. Chocolate frogs

9. Curse

10. Daily Prophet

11. Dark Mark

12. Death Eaters

13. Diagon Alley

14. Fat Friar

15. Fat Lady

16. Firebolt

17. Floo Powder/Network

18. Foe-Glass

19. Forbidden Forest

20. Gillyweed

21. Goblet of fire

22. Grey Lady

23. House elf

24. Howler

25. Invisibility cloak

26. Keeper

27. Knight Bus

28. The Leaky Cauldron

29. Mandrake

30. Marauder's Map

31. Moaning Mirtle

32. Mudblood

33. St Mungo's Hospital for Magical Maladies and Injuries

34. Nick Nearly Headless

35. O.W.L.s /owl

36. Pensieve

37. Pocket sneakoscope

38. Polyjuice potion

39. Portkey

40. Quick-quotes quill

41. Remembrall

42. Secrecy Sensor

43. Seeker

44. Shrieking Shack

45. Sorcerer's Stone

46. Sorting Hat

47. S.P.E.W.

48. The Three Broomsticks

49. Ton-Tongue Toffee

50. Unforgiveable Curses

51. Wormtail

If anyone knows if it's possible to put an excel like grid on a post, please tell me. (TABs didn't work, so I put
