| chiller(difficulty, question, secret, puzzle, obscurity) |
| christcross |
| cliffhanger(difficulty, question, secret, puzzle, knot) |
| climacteric(noun, trouble, change, twist, mess) |
| complication(noun, trouble, difficulty, pain, struggle) |
| conclusion(essence, profit, core, outcome, upshot) |
| concourse(noun, join, point, link, junction) |
| confluence(noun, join, point, link, junction) |
| confrontation(noun, trouble, change, mess, situation) |
| conjuncture(noun, join, point, link, junction) |
| connection(noun, join, point, link, junction) |
| connotation(noun, meaning) |
| constitution(noun, quality, character, spirit, significance) |
| copula(noun, join, point, link, junction) |
| corner(noun, trouble, change, mess, situation) |
| corpus(noun, organization, area, body, strength) |
| coupling(noun, join, point, link, junction) |
| crisscross |
| critical juncture |
| critical situation(noun, expression, trouble, change, mess) |