Central African Republic
noun: Central African(s)
adjective: Central African

Chad
noun: Chadian(s)
adjective: Chadian

Chile
noun: Chilean(s)
adjective: Chilean

China
noun: Chinese (singular and plural)
adjective: Chinese

Christmas Island
noun: Christmas Islander(s)
adjective: Christmas Island

Cocos (Keeling) Islands
noun: Cocos Islander(s)
adjective: Cocos Islander

Colombia
noun: Colombian(s)
adjective: Colombian

Comoros
noun: Comoran(s)
adjective: Comoran

Congo, Democratic Republic of the
noun: Congolese (singular and
plural)
adjective: Congolese or Congo

Congo, Republic of the
noun: Congolese (singular and plural)
adjective: Congolese or Congo