- Chadic language
- cola acuminata
- cricket
- caper
- cuckold
- cheat on
- circumvent
- canned meat
- command prompt
- cycloserine
- Cipro
- Chloromycetin
- cephalosporin
- carbomycin
- chloramphenicol
- cephaloridine
- chlortetracycline
- Cassiope
- ciprofloxacin
- Chimaphila
- Caryocar
- Camelina
- Ceiba
- Carica
- Crateva
- Capparis
- Capsella
- Cistus
- Corydalis
- Crambe
- Comandra
- Cheiranthus
- Corchorus
- Cochlearia
- Cleome
- Chelidonium
- Chamaedaphne
- Cardamine
- capitalise
- Cassiope mertensiana
- Carassius carassius
- Carassius vulgaris
- carp
- crucian carp
- Carassius auratus
- Ceryle alcyon
- coraciiform bird
- Choriotis
- Ciconia
- Chalcostigma