capitonym (KAP-i-toh-NIM) noun

   A word that changes pronunciation and meaning when it is capitalized.

   As in the following poems:

      Job's Job
   In August, an august patriarch
   Was reading an ad in Reading, Mass.
   Long-suffering Job secured a job
   To polish piles of polish brass.

      Herb's Herbs
   An herb store owner, name of Herb,
   Moved to a rainier Mount Rainier.
   It would have been so nice in Nice,
   And even tangier in Tangier.


contronym (KAHN-troh-NIM) noun

   A word that generates two opposite meanings. More popularly, they are
   known as Janus-faced words because the Greek god Janus had two faces
   that looked in opposite directions.

   "The moon is VISIBLE tonight."
   "The lights in the old house are always INVISIBLE."

   Although the two capitalized words are opposite in meaning, both can
   be replaced by the same word -- out. When the moon or sun or stars are
   out, they are visible. When the lights are out, they are invisible.
   Thus, out is a contronym.

   Other examples:
   cleave: separate; adhere firmly.
     a. A strong blow will cleave a plank in two.
     b. Bits of metal cleave to a magnet.

   oversight: careful supervision; neglect.
     a. The foreman was responsible for the oversight of the project.
     b. The foreman's oversight ruined the success of the project.