Role and Topside

Role noun - The action for which a person or thing is specially fitted or used or for which a thing exists.

Topside and role are semantically related. In some cases you can use "Topside" instead a noun "Role".

Topside noun - (usually plural) weather deck; the part of a ship's hull that is above the waterline.

Role and topside are semantically related. Sometimes you can use "Role" instead a noun "Topside".