Cut off and Decrease the volume

Cut off verb - To bring (as an action or operation) to an immediate end.

Decrease the volume and cut off are semantically related In some cases you can use "Decrease the volume" instead a verb "Cut off".

Cut off and decrease the volume are semantically related in silence topic. You can use "Cut off" instead a verb phrase "Decrease the volume", if it concerns topics such as make or be quiet.