Keyword Analysis & Research: what does it mean to overlay something

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does it mean to overlay something	1.1	0.9	2576	25	38
what	0.78	0.1	1060	4	4
does	1.94	0.8	6435	73	4
it	2	0.1	8266	71	2
mean	0.55	0.7	4606	9	4
to	1.35	0.8	5051	85	2
overlay	0.59	0.6	9327	90	7
something	0.98	0.6	1955	81	9

Keyword	CPC	PCC	Volume	Score
what does it mean to overlay something	0.75	0.2	7425	13