purgation/puhʹgaysh(ə)n/ noun

• contribution
• contributory
• contributory negligence
• con trick
• contrite
• contrition
• contrivance
• contrive
• contrived
• control
• control character
• control experiment
• control key
• controlled
• controlled experiment
• controller
• controlling interest
• control order
• control panel
• control rod
• control surface
• control tower
• control unit
• controversial
• controversy