Some uses for Classifications, Definitions, Refining definitions, and Re-purposing words. On the one hand: Why do we drive on a parkway, and park on a driveway? Shouldn't hot water heaters be called cold water heaters? If the water is already hot, why heat it? Shouldn't there be another word that sounds like the word homonym but means something different or is spelled differently? See #3. Homonym apparently isn't precise enough to distinguish all possible cases. Therefore, we refine the concept with homophones, homographs, heteronyms, heterophones, heterographs, capitonyms . . . I'm not making these word up* . Even though I have difficulty remembering the distinctions among these more precise categories , I understand that for linguists, the ability to distinguish among various types of homonyms could be useful. For example, a capitonym changes its meaning or pronunciation when capitalized. For example furniture polish is not pronounced like Polish ...