Cut off and Keep down

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

Keep down and cut off are semantically related In some cases you can replace term "Keep down" with "Cut off", this phrasal verbs are similar.

Keep down verb - Place a limit on the number of.

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