Keyword Analysis & Research: what does brackets around a word mean

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what does brackets around a word mean	0.92	1	1160	82	37
what	1.25	1	8171	76	4
does	1.03	0.1	1169	69	4
brackets	1.91	0.1	3334	62	8
around	0.85	0.7	5782	33	6
a	0.86	0.4	5874	85	1
word	0.95	0.8	2731	71	4
mean	0.47	0.5	6992	21	4

Keyword	CPC	PCC	Volume	Score
what does brackets around a word mean	1.72	0.9	6081	28