Keyword Analysis & Research: define gray or grey

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
define gray or grey	1.17	0.1	6179	80	19
define	0.76	0.3	9468	86	6
gray	0.51	0.4	1658	96	4
or	0.08	0.5	834	92	2
grey	0.63	1	7345	45	4

Keyword	CPC	PCC	Volume	Score
define gray vs grey	0.44	0.8	9073	32
it is grey or gray	0.46	0.5	2611	67
color grey or gray meaning	1.51	0.3	2808	51
grey meaning in english	1.84	0.6	4826	10
what is the difference between gray and grey	0.78	0.3	5192	64
color grey or gray	1.45	0.7	8225	66
difference between grey and gray	0.73	0.3	8753	73