| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| space theories and concepts | 0.87 | 0.9 | 419 | 44 | 27 |
| space | 1.69 | 0.6 | 6447 | 27 | 5 |
| theories | 0.3 | 0.5 | 3188 | 18 | 8 |
| and | 2 | 0.8 | 4240 | 86 | 3 |
| concepts | 1.12 | 1 | 3980 | 77 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| space theories and concepts | 0.81 | 1 | 6554 | 96 |
| perception of space theories | 1.93 | 1 | 9165 | 52 |
| space and social theory | 1.8 | 0.7 | 9819 | 16 |
| popular theories on space | 0.39 | 0.6 | 6510 | 58 |
| theories on time and space | 1.44 | 0.2 | 6499 | 56 |
| theory of space and time | 0.03 | 0.7 | 9172 | 18 |
| space theory in literature | 0.3 | 0.1 | 1369 | 75 |
| explaining the concept of space | 0.48 | 0.5 | 6555 | 38 |
| the concept of space | 0.45 | 0.7 | 6609 | 26 |
| scientific concepts about space | 1.98 | 0.9 | 6884 | 56 |
| space and place theory | 0.11 | 0.1 | 422 | 14 |
| explaination of the concept of space | 1.84 | 0.8 | 129 | 69 |
| the theory of international space | 1.92 | 0.3 | 9083 | 79 |
| the third space theory | 1.38 | 0.3 | 2618 | 13 |
