- couple, pair
- cross, transverse
- cross hole, transverse passage
- crossrail (US), cross beam, cross member (GB)
- control loop, control system
- control; regulation
- crack, split, fracture, tear
- corrosion; rusting
- calm, quiet; (wirtschaftliche Lage) slack
- control cam, trip cam
- control box, electric panel, switch cabinet
- circuit, connection, control, switching
- crooked, slanting
- close, shut; (abschließen) lock
- cut, slot
- cable; rope
- compression ignition, auto-ignition
- clearance, gap
- crevice; (Riß) fissure
- clamping device, tightener
- clamping fixture, clamping jig, clamping device
- coil potential (ignition)
- continuous, steady
- control, steer
- control unit, control (system), controller
- current loop, electric circuit
- conversion; reconstruction
- change lever (gears)
- convert, switch over
- collective agreement, wage agreement
- cup spring, disk spring
- cruise control, vehicle speed controller
- clearance volume; (in Rohrleitung) gap
- carry, bear
- crossrail, crosshead, traverse; (Fahrgestell) crossbar
- cutting die, part-off die
- cover; overlap
- curtain (shade)
- connection cable, junction canal
- connecting piece, adaptor
- concealed, hidden
- carbon deposit; combustion residue
- cast (iron)
- combustion engine; internal combustion engine
- car, vehicle
- car valeting, car maintenance
- choose, dial
- cell bridge (battery)
- crumble, crush, pulverize
- curb weight; payload
