| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when did crossword puzzles become popular | 1.47 | 1 | 7733 | 47 |
| when were crossword puzzles invented | 0.94 | 0.4 | 3618 | 93 |
| history of crossword puzzles | 0.92 | 0.9 | 8302 | 90 |
| how long have crossword puzzles been around | 1.23 | 0.4 | 7929 | 82 |
| most popular crossword puzzles | 0.12 | 0.1 | 1631 | 63 |
| when was the first crossword puzzle made | 1.2 | 0.9 | 2744 | 55 |
| when was the first crossword puzzle created | 0.06 | 0.2 | 3496 | 34 |
| when was the first crossword puzzle | 0.39 | 0.8 | 4275 | 13 |
| history of crossword puzzles wikipedia | 0.95 | 0.7 | 9511 | 49 |
| what year was the first crossword puzzle | 0.53 | 0.8 | 8836 | 43 |
| crossword puzzles usa history | 0.91 | 0.5 | 4264 | 56 |
| free crossword puzzles us history | 1.03 | 0.1 | 5593 | 20 |
| world history crossword puzzles | 1.67 | 0.7 | 5282 | 72 |
| who invented crossword puzzles | 0.8 | 0.8 | 1372 | 19 |
| first crossword puzzle ever published | 0.79 | 0.8 | 1880 | 84 |
| first crossword puzzle year | 0.83 | 1 | 4083 | 40 |
| crossword puzzle originally published | 1.11 | 0.5 | 7534 | 76 |
| the first crossword puzzle published in 1913 | 1.78 | 0.1 | 2355 | 20 |
| famous puzzles in history | 1.66 | 0.2 | 760 | 44 |
