hard one

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Across
  1. 3. Tool for writing
  2. 5. Precious transparent gemstone
  3. 6. Shows countries and cities
  4. 7. Worn on the head
  5. 8. Socket that provides electricity
  6. 9. Group of fruit trees
  7. 10. Rain blocker you hold
  8. 11. Vehicle that runs on tracks
  9. 13. Object that attracts metal
  10. 14. Small industrious insect
  11. 17. Shaking of the ground
  12. 19. Sphere-shaped object
  13. 21. Cheesy round baked dish
  14. 24. Percussion instrument
  15. 25. Frozen water
  16. 26. Flat green part of a plant
  17. 27. Thick liquid used in cooking
  18. 28. A flying vehicle
  19. 31. Bright point of light in the sky
  20. 33. Machine that flies
  21. 35. Organ used to smell
  22. 36. Small underground creature
  23. 37. Natural flowing waterway
  24. 42. Utensil for eating soup
  25. 44. Paper cover for a letter
  26. 45. Dry, sandy region
  27. 47. Female monarch
  28. 50. Reflects an image
  29. 51. Land beside a river
  30. 52. Large area of trees
  31. 53. Bird’s home
  32. 55. Luxury boat
  33. 56. Device that plays sound
  34. 57. Dome house made of snow
  35. 59. Mesh used for catching fish
  36. 63. Large animal with a trunk
  37. 65. Removes pencil marks
  38. 66. Coastal tower with a light
  39. 69. Machine that provides power
  40. 70. Power to do work
  41. 74. Tall building or structure
  42. 75. Place to buy and sell
  43. 76. Device used to call people
  44. 77. Path for cars
  45. 79. Place for learning
  46. 80. Colored liquid used in pens
  47. 81. Vehicle that flies into space
Down
  1. 1. Structure that crosses water
  2. 2. Heavy metal hook for ships
  3. 4. Symbol used for counting
  4. 9. Large body of salt water
  5. 11. Large striped cat
  6. 12. Underground passage
  7. 15. High-pitched string instrument
  8. 16. Indoor light source
  9. 17. When the moon blocks the sun
  10. 18. Standard outfit for a group
  11. 19. Dishes safe for baking
  12. 20. A region or space
  13. 22. Land surrounded by water
  14. 23. A common fruit, red or green
  15. 27. Heats food for baking
  16. 29. Group of islands
  17. 30. Organ used for seeing
  18. 32. Place of worship
  19. 33. Pointed projectile
  20. 34. Tool to reach high places
  21. 37. Programmable machine
  22. 38. Performs in movies or plays
  23. 39. Very high hill
  24. 40. Power to do work
  25. 41. Table for writing or working
  26. 43. Arc of colors in the sky
  27. 46. The outside of an egg
  28. 48. Area of ground by a house
  29. 49. Tall plant with wood
  30. 54. Small community in the country
  31. 58. Place with many books
  32. 60. Green public area
  33. 61. Stand for holding a canvas
  34. 62. Legendary lost city
  35. 64. Designer of machines and systems
  36. 67. Strong farm animal
  37. 68. Moves people up and down
  38. 70. Large bird of prey
  39. 71. The planet we live on
  40. 72. Land for growing food
  41. 73. Artificial lake for water
  42. 78. Curved path around a star or planet