1. concrete capable of being perceived by the senses
  2. congruent corresponding in character or kind
  3. concerto a composition for orchestra and a soloist
  4. contrite feeling or expressing pain or sorrow for sins or offenses
  5. congruity the quality of agreeing; being suitable and appropriate
  6. concur happen simultaneously
  7. concord a harmonious state of things and of their properties
  8. concert a performance of music by players or singers
  9. concurrent occurring or operating at the same time
  10. cancroid the most common form of skin cancer
  11. Concord capital of the state of New Hampshire
  12. consecrate give entirely to a specific person, activity, or cause
  13. concretize make something concrete
  14. concretely in concrete terms
  15. convert change the nature, purpose, or function of something
  16. concretise make something concrete
  17. congress a formal meeting, especially of representatives
  18. congregate come together, usually for a purpose
  19. concoct make something by mixing
  20. congo red a red-brown azo dye especially as a chemical pH indicator