Bottle up and Jam-up

Bottle up verb - Control and refrain from showing; of emotions, desires, impulses, or behavior.

Jam-up and bottle up are semantically related. In some cases you can replace phrase "Jam-up" with "Bottle up", this terms are similar.

Jam-up noun - A crowded mass (as of cars) that impedes or blocks movement.

Bottle up and jam-up are semantically related. Sometimes you can use "Bottle up" instead a verb phrase "Jam-up".