poison gases used in ww1

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
poison gases used in ww1	1.01	0.2	4446	86	24
poison	0.36	0.6	8205	63	6
gases	1.61	0.8	7587	16	5
used	0.9	1	2238	79	4
in	0.91	0.8	2716	5	2
ww1	1.26	0.8	5988	47	3

Keyword	CPC	PCC	Volume	Score
poison gases used in ww1	1.59	0.8	2482	45
how was poison gas used in ww1	0.75	0.5	5655	71
when was poison gas first used in ww1	1.8	0.1	5199	9
what was poison gas used for in ww1	1.75	0.6	4140	81
why was poison gas used in ww1	1.16	0.5	7641	82
poison gas used in ww1	0.64	0.4	3870	77
what battle was poison gas first used in ww1	1.54	0.7	8096	9
how was poison gas used in wwi	1.04	0.4	9642	100
who first used poison gas in ww1	1.07	0.2	6414	60
who used poison gas in ww1	0.19	0.9	1888	82
was poison gas used in ww2	0.51	0.5	5634	60