Keyword Analysis & Research: what is the meaning of buffer zone

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is the meaning of buffer zone	0.17	0.1	399	16	34
what	0.8	0.7	9293	69	4
is	0.6	1	1668	81	2
the	1.98	0.2	7710	88	3
meaning	1.89	0.6	7382	71	7
of	0.74	0.5	5004	51	2
buffer	1.11	0.2	6990	15	6
zone	1.39	0.2	5973	76	4

Keyword	CPC	PCC	Volume	Score
what is the meaning of buffer zone	1.26	0.5	8363	76