1. coup de grace the blow that kills (usually mercifully)
  2. cloud grass Spanish grass with light feathery panicles grown for dried bouquets
  3. cord grass any of several perennial grasses of the genus Spartina
  4. cordgrass any of several perennial grasses of the genus Spartina
  5. carpet grass grass native to West Indies but common in southern United States having tufted wiry stems often infested with a dark fungus
  6. categorize place into or assign to a class
  7. ludicrous inviting ridicule
  8. scapegrace a reckless and unprincipled reprobate
  9. categorise place into or assign to a category
  10. goat grass European grass naturalized as a weed in North America
  11. cryptogram a piece of writing in code or cipher
  12. couch grass European grass spreading rapidly by creeping rhizomes
  13. cryptograph a secret method of writing
  14. Coptic Church the ancient Christian church of Egypt
  15. Pythagoras Greek philosopher and mathematician who proved the Pythagorean theorem; considered to be the first true mathematician (circa 580-500 BC)
  16. cut across cut using a diagonal line
  17. biodegrade break down naturally through the action of biological agents
  18. crowfoot grass a creeping grass with spikes like fingers
  19. cryptography the science of analyzing and deciphering codes
  20. autocracy a theory favoring unlimited authority by an individual