Mob and Tie-up

Mob noun - A great number of persons or creatures massed together.

Tie-up and mob are semantically related. In some cases you can use "Tie-up" instead a noun "Mob".

Nearby Word: mobster

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

Mob and tie-up are semantically related. Sometimes you can use "Mob" instead a noun phrase "Tie-up".