Polysemy: This is the concept that words often have multiple meanings. Some of these meanings may be similar, but others may be radically different. Arace horse is different than a clothes horse. A person may look cool, but that is not the same as his forehead feeling cool. In the sweltering heat a boy may be cool in his air conditioned car, but going to the senior prom he may look cool driving his car wearing his tuxedo.