Keyword Analysis & Research: is it gray or grey matter

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
is it gray or grey matter	0.79	0.9	9135	43	25
is	0.08	1	3381	91	2
it	0.28	0.2	8255	6	2
gray	0.62	0.2	158	30	4
or	1.37	0.6	490	83	2
grey	0.09	0.7	1436	87	4
matter	0.98	0.8	8791	5	6

Keyword	CPC	PCC	Volume	Score
is it gray or grey matter	0.46	0.9	1522	10
grey matter or gray matter	0.9	0.4	7191	57
gray or grey matter	0.16	0.4	9095	29
ben 10 gray & grey matter	0.75	0.3	5915	26
grey matter vs gray matter	0.07	0.7	6522	92
brain grey matter or gray matter	1.73	0.3	6388	4
is it grey matter or gray matter	1.58	0.1	1557	31
is it grey matter or gray matter in the brain	0.43	1	867	13