Keyword Analysis & Research: what does what's the catch mean

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does what's the catch mean	0.99	0.6	2633	63	31
what	0.74	1	9682	75	4
does	1.47	0.1	4948	34	4
what's	0.06	0.2	6435	92	6
the	1.73	0.2	2270	55	3
catch	1.05	0.4	7509	75	5
mean	0.12	0.8	480	98	4

Keyword	CPC	PCC	Volume	Score
what does what's the catch mean	1.87	0.9	4131	1