café
can
candidate
canvas
carve
casual
catastrophe
Celsius
cement
championship
Charles Keeling
chemist
chewing gum
cigar
cigarette
cinquain
circular
circumstance
civilization
clay
coffin
coincidence
come about
commitment
committee
compass
comprehension
concrete
condom
consequence
consequently
consume
contemporary
contradictory
contribution
controversial
conventional
convey
cottage
crane
crater
critic