Block and Slab

Block noun - A number of things considered as a unit.

Slab is a synonym for block in thing topic. In some cases you can use "Slab" instead a noun "Block", when it comes to topics like chunk, mass of material.

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

Slab noun - Block consisting of a thick piece of something.

Block is a synonym for slab in mass topic. You can use "Block" instead a noun "Slab", if it concerns topics such as piece.