| cottonseed | semente de algodão |
| cotyledon | cotilédone |
| Cotylorhynchus | Cotylorhynchus |
| Cotys I | Cotis I |
| couch | sofá |
| couch grass | grama-de-ponta |
| couch-grass | couch-grama |
| couchette | leito |
| couchget | espreguiçadeira |
| CouchSurfing | CouchSurfing |
| Couette flow | Fluxo de Couette |
| cougar | puma |
| cough | confissão |
| Cough medicine | Antitússico |
| cough syrup | xarope |
| coughing | tosse |
| coughk | tossedade |
| Coulomb | Coulomb |
| Coulomb barrier | Barreira coulombiana |
| Coulomb's law | Lei de Coulomb |
| Coulrophobia | Coulrofobia |
| Coulter Pine | Pinus coulteri |
| coumarin | cumarina |
| council | junta |
| Council communism | Comunismo de conselhos |
| Council of Basel | Concílio de Basileia-Ferrara-Florença |
| Council of Chalcedon | Concílio de Calcedónia |
| Council of Clermont | Concílio de Clermont |
| Council of Constance | Concílio de Constança |
| Council of Constantinople | Concílio de Constantinopla |
| Council of Ephesus | Concílio de Éfeso |
| Council of Europe | Conselho da Europa |
| Council of Florence | Concílio de Basileia-Ferrara-Florença |
| Council of Hieria | Concílio de Hieria |
| Council of Jerusalem | Concílio de Jerusalém |
| Council of Laodicea | Concílio de Laodicéia |
| Council of Lyon | Concílio de Lyon |
| Council of Ministers of the Republic of Poland | Governo |
| Council of Nicaea | Concílio de Niceia |
| Council of Pisa | Concílio de Pisa |
| Council of State | Conselho de Estado |
| Council of State of Luxembourg | Conselho de Estado |
| Council of the European Union | Conselho da União Europeia |
| Council of Trent | Concílio de Trento |
| Council of Vienne | Concílio de Vienne |
| Council on Foreign Relations | Council of Foreign Relations |
| councillor | consultor |
| councilman | consultor |
| councilnow | concílio |
| councilor | consultor |
| councilperson | consultor |
| Councils of Toledo | Concílio de Toledo |
| councilwoman | consultora |
| counsel | avisar |
