Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
history of the lightning rod | 1.46 | 0.9 | 3581 | 48 |
history of lightning rods | 0.78 | 1 | 8252 | 5 |
lightning rod blueprint history | 0.49 | 0.8 | 235 | 76 |
lightning rod history and information | 0.71 | 0.8 | 5892 | 69 |
lightning rod balls history | 0.06 | 0.7 | 4434 | 23 |
who made the lightning rod | 1.55 | 0.9 | 9812 | 21 |
inventor of lightning rod | 0.56 | 0.3 | 1254 | 75 |
when was the lightning rod patented | 1.03 | 0.9 | 642 | 65 |
lightning rod invented in 1752 | 1.15 | 0.1 | 581 | 50 |