Keyword Analysis & Research: why is color sometimes spelled colour

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why is color sometimes spelled colour	0.07	0.3	8424	46	37
why	0.12	0.2	7056	40	3
is	1.58	0.1	3617	51	2
color	1.12	0.5	6530	44	5
sometimes	0.6	0.6	5959	17	9
spelled	1.58	0.8	321	17	7
colour	1.94	0.6	4614	3	6

Keyword	CPC	PCC	Volume	Score
why is color sometimes spelled colour	1.83	0.4	7320	57