Dead air and Hush-hush

Dead air noun - An inadvertent interruption in a broadcast during which there is no sound.

Hush-hush and dead air are semantically related. in speech topic. In some cases you can use "Hush-hush" instead a noun phrase "Dead air", when it comes to topics like silence.

Hush-hush adjective - Not known or meant to be known by the general populace.

Dead air and hush-hush are semantically related. Sometimes you can use "Dead air" instead a noun phrase "Hush-hush".