| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| 1918 flu pandemic masks | 0.07 | 0.4 | 9656 | 19 | 23 |
| 1918 | 1.13 | 0.7 | 2071 | 74 | 4 |
| flu | 1.52 | 0.6 | 4321 | 26 | 3 |
| pandemic | 0.06 | 0.6 | 3299 | 10 | 8 |
| masks | 1.3 | 0.1 | 3624 | 53 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| 1918 flu pandemic masks | 1.53 | 0.6 | 9621 | 50 |
| 1918 flu pandemic face masks | 1.29 | 0.2 | 2430 | 21 |
| 1918 spanish flu pandemic masks | 0.3 | 0.7 | 8025 | 58 |
| people wore masks during 1918 flu epidemic | 1.64 | 0.4 | 2425 | 74 |
| spanish flu masks 1918 | 0.13 | 0.7 | 2750 | 93 |
| pandemic flu of 1918 images | 1.96 | 1 | 2489 | 87 |
| the 1918 flu pandemic | 0.89 | 0.9 | 9288 | 80 |
| history of 1918 flu pandemic | 1.12 | 1 | 3395 | 64 |
| cdc 1918 flu pandemic | 1 | 0.1 | 7976 | 49 |
| the flu pandemic of 1918 national archives | 0.59 | 0.1 | 458 | 73 |
| great flu pandemic of 1918 | 1.65 | 1 | 1561 | 94 |
| global flu pandemic 1918 | 1.13 | 0.9 | 8785 | 55 |
| how did the 1918 flu pandemic end | 0.58 | 0.8 | 8825 | 100 |
| the 1918 influenza pandemic | 0.52 | 0.9 | 3140 | 40 |
| information about 1918 influenza pandemic | 0.71 | 0.7 | 8153 | 97 |
| influenza pandemic 1918 uk | 1.43 | 0.7 | 789 | 13 |
| the 1918 great influenza pandemic | 0.59 | 0.7 | 6406 | 16 |
| cdc 1918 pandemic influenza | 1.03 | 0.4 | 1077 | 16 |
| influenza epidemic 1918 ww1 | 1.84 | 0.4 | 3896 | 22 |
| influenza epidemic 1918 slides | 0.74 | 0.9 | 4116 | 24 |
