- convertible bond
- constraint
- chemical bond
- crash
- collision
- cork up
- consideration
- chip
- copyright
- countercheck
- clutter
- clutter up
- chomp
- cube
- choke up
- cylinder block
- casting
- Cottrell precipitator
- control board
- cell
- control panel
- clorox
- come together
- cheeseparing
- close down
- closing curtain
- close_fitting
- close cut
- close knit
- close in
- cloture
- closure by compartment
- closing
- closedown
- coming
- cucurbitaceae
- cudbear
- cut out
- continuant consonant
- chavez
- crunch
- champ
- chevy
- chewing
- chew out
- change of state
- coursework
- cow
- crenellated
- clonk