| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| chemical warfare definition us history | 0.85 | 1 | 6355 | 83 | 38 |
| chemical | 0.63 | 0.5 | 2170 | 73 | 8 |
| warfare | 0.72 | 0.3 | 8327 | 22 | 7 |
| definition | 0.2 | 0.2 | 3150 | 36 | 10 |
| us | 1.23 | 0.9 | 45 | 65 | 2 |
| history | 1.03 | 0.5 | 8071 | 29 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| chemical warfare definition us history | 1.96 | 1 | 7195 | 54 |
| what does chemical warfare mean | 1.44 | 1 | 3296 | 60 |
| when was chemical warfare invented | 0.64 | 0.6 | 2975 | 94 |
| when was chemical warfare introduced | 0.94 | 0.4 | 3921 | 79 |
| chemical warfare ww1 definition | 1.73 | 0.5 | 4148 | 86 |
| when did chemical warfare start | 0.32 | 0.8 | 9590 | 29 |
| chemical warfare weapons history | 0.77 | 0.9 | 125 | 14 |
| who created chemical warfare | 1.92 | 0.1 | 1993 | 74 |
| who invented chemical warfare | 1.56 | 1 | 9716 | 61 |
| chemical warfare world war i | 1.59 | 0.9 | 3088 | 2 |
| what is chemical warfare ww1 | 0.5 | 1 | 3614 | 64 |
| a laboratory history of chemical warfare | 0.5 | 0.9 | 6391 | 24 |
| chemical warfare in wwi | 0.48 | 0.2 | 8595 | 37 |
| chemical warfare in world war 1 | 0.96 | 0.5 | 437 | 57 |
