Add-on and Rider

Add-on noun - Something that is not necessary in itself but adds to the convenience or performance of the main piece of equipment.

Rider and add-on are semantically related. In some cases you can use "Rider" instead a noun phrase "Add-on".

Rider noun - A traveler who actively rides an animal (as a horse or camel).

Add-on and rider are semantically related. Sometimes you can use "Add-on" instead a noun "Rider".

Nearby Words: ride, riding, riderless, ridable