Keyword Analysis & Research: what is another word for the sound barrier

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
what is another word for the sound barrier	1.61	0.3	1202	8	42
what	0.63	0.7	2283	13	4
is	1.99	0.1	5653	78	2
another	0.71	0.1	9792	77	7
word	1.35	0.1	8741	45	4
for	1.82	0.7	943	70	3
the	0.41	0.1	7918	1	3
sound	1.03	0.9	6466	98	5
barrier	1.97	0.4	8399	45	7

Keyword	CPC	PCC	Volume	Score
what is another word for the sound barrier	0.23	0.3	572	9
what is the sound barrier	1.49	0.5	3877	65
what's the sound barrier	1.26	0.9	3987	95
definition of sound barrier	1.61	0.4	7100	46
what is another word for barrier	1.89	0.4	7394	15
what's another word for barrier	0.49	0.5	7941	39
another word for language barrier	1.09	0.2	4083	52
sound barrier for wall	1.16	1	5891	46
alternative word for barrier	0.64	0.2	170	87
another name for barrier	0.53	0.4	2797	47
other term for barrier	0.3	0.9	5138	54
sound barriers for noise	0.75	0.7	7731	74