| congratulation | felicitación |
| congratulations | felicitaciones |
| congratulatory | de felicitación |
| congregate | unirse |
| Congregatio de Auxiliis | Polémica de auxiliis |
| Congregatio Immaculati Cordis Mariae | Congregación del Corazón Inmaculado de María |
| congregation | congregación |
| Congregation for Bishops | Congregación para los Obispos |
| Congregation for Institutes of Consecrated Life and Societies of Apostolic Life | Congregación para los Institutos de Vida Consagrada y las Sociedades de Vida Apostólica |
| Congregation for the Doctrine of the Faith | Congregación para la Doctrina de la Fe |
| Congregation for the Evangelization of Peoples | Congregación para la Evangelización de los Pueblos |
| Congregation for the Oriental Churches | Congregación para las Iglesias Orientales |
| Congregation of the Most Holy Redeemer | Congregación del Santísimo Redentor |
| Congregation of the Sacred Hearts of Jesus and Mary | Congregación de los Sagrados Corazones |
| Congregation of the Ursulines of the Agonizing Heart of Jesus | Congregacion de Hermanas Ursulinas del Corazon de Jesus Agonizante |
| congregational | congregacionalista |
| Congregational church | Iglesia congregacional |
| Congregationalist church governance | Iglesia congregacional |
| Congregationalist polity | Iglesia congregacional |
| Congress | Congreso |
| Congress of Chilpancingo | Congreso de Chilpancingo |
| Congress of Deputies | Congreso de los Diputados de España |
| Congress of Erfurt | Congreso de Erfurt |
| Congress of Mexico | Congreso de la Unión de México |
| Congress of Peru | Congreso de la República del Perú |
| Congress of South African Trade Unions | Congress of South African Trade Unions |
| Congress of the Communist Party of the Soviet Union | Congreso del Partido Comunista de la Unión Soviética |
| Congress of the Confederation | Congreso de la Confederación |
| Congress of the Philippines | Congreso |
| Congress of Troppau | Congreso de Troppau |
| Congress of Ukrainian Nationalists | Congreso de Nacionalistas Ucranianos |
| Congress of Verona | Congreso de Verona |
| Congress of Vienna | Congreso de Viena |
| congressional | del congreso |
| Congressional staff actions prompt Wikipedia investigation | Wikipedia investiga sobre las ediciones del equipo de un congresista norteamericano |
| congressman | congresista |
| congresswoman | congresista |
| Congridae | Conger conger |
| congruence | congruencia |
| congruent | congruente |
| congruity | congruencia |
| congruous | compatible |
| Conguillío National Park | Parque Nacional Conguillío |
| Coniacian | Coñac |
| conic | cónico |
| Conic section | Sección cónica |
| conical | cónico |
| Conical flask | Matraz de Erlenmeyer |
| Conical hill | Butte |
| Conical surface | Cono |
