Keyword Analysis & Research: why do they call it a fortnight

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
why do they call it a fortnight	1.27	0.8	1282	72	31
why	0.48	0.5	681	40	3
do	1.63	0.9	9163	60	2
they	1.1	0.9	6639	5	4
call	1.41	0.9	7923	70	4
it	1.04	0.2	6918	98	2
a	1.28	0.7	9314	54	1
fortnight	0.39	0.9	697	33	9

Keyword	CPC	PCC	Volume	Score
why do they call it a fortnight	1.59	0.2	9934	97