when were cannon balls invented

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when were cannon balls invented	1.2	0.1	9344	49	31
when	0.16	0.2	8034	63	4
were	1.74	0.9	2670	37	4
cannon	1.53	0.6	42	73	6
balls	1.46	0.9	1189	24	5
invented	1.31	0.5	9012	53	8

Keyword	CPC	PCC	Volume	Score
when were cannon balls invented	0.82	0.7	371	98
when were explosive cannon balls invented	0.25	0.7	3863	92
when were exploding cannon balls first used	0.61	0.8	6526	32
when were exploding cannonballs invented	1.41	0.7	6859	80
exploding cannon balls invented	0.5	1	1036	14
how cannon balls were made	0.27	0.9	7965	86
when did cannon balls become explosive	1.73	0.6	3833	83
when were cannons invented	1.06	0.5	1943	64
antique cannon balls for sale	1.17	0.8	9516	3
old cannon balls for sale	1.58	0.1	837	72
what year were cannons invented	0.93	0.9	3893	50
how were cannonballs made	1.07	0.5	3002	94
how did they make cannonballs	1.57	0.7	5871	11