Ferrule and Slab

Ferrule noun - A metal cap or band placed on a wooden pole to prevent splitting.

Slab and ferrule are semantically related. in pole topic. In some cases you can use "Slab" instead a noun "Ferrule".

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

Ferrule and slab are semantically related. You can use "Ferrule" instead a noun "Slab".