Hang up and Jam-up

Hang up verb - Cause to be hanging or suspended.

Jam-up and hang up are semantically related. in obstruction topic. In some cases you can use "Jam-up" instead a noun "Hang up".

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

Hang up and jam-up are semantically related. Sometimes you can use "Hang up" instead the phrase "Jam-up" as a verb or a noun.