Jam-up and Lapel

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

Lapel and jam-up are semantically related. In some cases you can use "Lapel" instead a noun phrase "Jam-up".

Lapel noun - Lap at the front of a coat; continuation of the coat collar.

Jam-up and lapel are semantically related. Sometimes you can use "Jam-up" instead a noun "Lapel".