where was heroin first made

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
where was heroin first made	1.39	0.6	6976	1	27
where	0.17	0.9	1174	10	5
was	1.11	0.4	8509	33	3
heroin	1.61	0.6	5346	42	6
first	0.79	0.2	4968	22	5
made	0.12	1	996	23	4

Keyword	CPC	PCC	Volume	Score
where was heroin first made	1.04	0.8	5951	52
when was heroin first made	1.38	0.4	8545	27
who first made heroin	1.65	0.5	8917	52
when was heroin first discovered	0.51	1	2343	79
where was heroin found	1.43	0.9	9654	43
when was heroin first used	1.85	0.2	9511	86
when was heroin invented	1.28	1	8223	94
where does heroin originate	1.03	0.7	1919	60
brief history of heroin	1.69	0.2	1927	52
when was heroin first developed	1.1	0.1	4433	30
when was heroin discovered	1.78	0.2	1031	58
how was heroin invented	0.43	0.6	3514	35
heroin as medicine history	0.12	0.2	2189	20
history of heroin in the us	1.48	0.4	8289	100
history of heroin timeline	1.6	0.5	3847	18