Trembling crossword

12345678910
Across
  1. 2. The central topic of a crossword.
  2. 5. A hint to help solve a puzzle.
  3. 8. A puzzle consisting of a grid to fill with words.
  4. 9. The solution to a crossword clue.
  5. 10. Words filled vertically in a crossword.
Down
  1. 1. The number identifying a crossword hint.
  2. 3. Words filled horizontally in a crossword.
  3. 4. A game to solve using clues.
  4. 6. A network of squares for filling in letters.
  5. 7. An empty square in a crossword grid.