The term 'RUB OFF' can be solved by two crossword solutions: 'ABRADE' (6 letters) and 'ERASE' (5 letters). Both terms refer to the action of removing something from a surface, either by rubbing or erasing. The term 'ABRADE' is derived from the Latin word 'abradere', which means 'to scrape off'. The term 'ERASE' is derived from the Latin word 'exarare', which means 'to scratch out'. Therefore, both terms refer to the same action of removing something from a surface.