Block and Jam-up

Block verb - To close up so that no empty spaces remain.

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

Nearby Words: blocked, blockade, blockage, blockhead, blocking

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

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