- congenital pancytopenia
 - chyloderma
 - conger eel
 - chilean bonito
 - chile bonito
 - clupea harengus pallasii
 - Clupea harangus
 - counterinsurgency
 - crate
 - cheapjack
 - crier
 - chapman
 - collector
 - commercial treaty
 - chaplain
 - child molester
 - cowslip
 - chiralgia
 - causalgia
 - chest pain
 - cannikin
 - colchicine
 - Castilleja miniata
 - Castilleja sessiliflora
 - Castilleja sulphurea
 - Castilleja chromosa
 - chrysanthemum coccineum
 - chrysemys picta
 - coleus blumei
 - colorist
 - cubist
 - catamount
 - compound lever
 - clipper
 - coal tongs
 - cembalo
 - conjugation
 - crossing
 - chinese white cabbage
 - chum up
 - chum
 - castle
 - cream violet
 - color property
 - civilisation
 - cortex
 - civilization
 - Clovis culture
 - cerebral mantle
 - cerebral cortex