Keyword Analysis & Research: what does signal words mean

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does signal words mean	2	0.3	7648	94	27
what	1.72	0.9	3292	39	4
does	1.19	0.1	8040	29	4
signal	0.47	0.3	5918	2	6
words	0.86	0.3	2575	7	5
mean	1.06	0.2	8236	79	4

Keyword	CPC	PCC	Volume	Score
what does signal words mean	0.87	0.6	3621	31