Keep it down and Tongue tie

Tongue tie and keep it down are semantically related In some cases you can replace phrase "Tongue tie" with "Keep it down", this terms are similar.

Tongue tie noun - A congenital anomaly in which the mucous membrane under the tongue is too short limiting the mobility of the tongue.

Keep it down and tongue tie are semantically related in silence topic. Sometimes you can use "Keep it down" instead a verb phrase "Tongue tie", if it concerns topics such as make or be quiet.