A jar is a jar no matter the contents. The contents can be part of the title and in the description. I mentally fought against this simple way of cataloging but in the end (and through generations of staff) keep-it-simple is always the best policy. Your search engine will find “silver polish” whether it is in the object name or title or description or markings or whatever–search engines rock.
Think of it this way, a “print, photograph” doesn’t change by subject matter, but the title does.
