(coll.) dude; buddy; bro

elder brother

erhua form of 哥們|哥们[ge1 men5]

Colombia (country in South America); Columbia (name of various entities, mostly in the USA)

Cristóbal Colón or Christopher Columbus (1451-1506); Columbus, capital of Ohio

(loanword) Gothic subculture or aesthetic

Godzilla

Copenhagen or København, capital of Denmark

Columbia University

Costa Rica

Cossack (people)

(coll.) two brothers; two close male friends

brothers; boys

Columbia University (abbr.)

(Tw) Gothic; (Tw) Goethe (1749–1832), German poet and playwright

Goliath

Godzilla (Tw)

goblin (loanword)

Gothenburg (city in Sweden)

(Tw) Gothic style

(Protestantism) Corinth, city in Greece

Goth (member of a historical East Germanic people)

Gothic (style in architecture, art, literature etc)

Mikolaj Kopernik or Nicolaus Copernicus (1473-1543), Polish astronomer, mathematician and polymath

(loanword) chloroform; trichloromethane CHCl3

late-Qing underground resistance movement against the Qing dynasty

Königsberg, Baltic port city, capital of East Prussia (until WWII)

Kota Bharu, city in Malaysia on border with Thailand, capital of Kelantan sultanate

(Tw) Costa Rica

First epistle of St Paul to the Corinthians

Second Epistle of St Paul to the Corinthians

District of Columbia, USA

the Goldbach conjecture in number theory

Columbia Broadcasting System (CBS)