Keyword Analysis & Research: what is mean by retention

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is mean by retention	0.88	1	9784	13	25
what	1.16	0.6	3612	87	4
is	0.83	0.4	5127	10	2
mean	1.77	0.3	440	42	4
by	0.96	0.6	5626	79	2
retention	0.25	0.4	7735	23	9

Keyword	CPC	PCC	Volume	Score
what is mean by retention	0.59	0.2	5599	13