polish can be defined into 3 categories:cleaner, compound, glaze. Cleaners can be abrasive and nonabrasive, compounds are harsh and remove layers of paint, glazes usually fill scratches and swirls while adding oils for gloss. Some products that claim to be polishes are usually polymer based(like zaino show car polish, klasse, nufinish, blackfire, and liquid glass). Polymers are superior to carnauba in protection, but don't add as much depth as caranuba waxes since they usually contain oils.