Eraser and Rubber eraser

Eraser noun - An implement used to erase something.

Rubber eraser and eraser are semantically related. In some cases you can replace phrase "Rubber eraser" with "Eraser", this terms are similar.

Nearby Words: erase, erased, erasing, erasable

Rubber eraser noun - An eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil.

Eraser and rubber eraser are semantically related. You can use "Eraser" instead a noun phrase "Rubber eraser".