How do you say friend in Korean?
— 친구 (chingu); (dongmu)

Generic synonyms for friend in Korean
person사람 (saram); 인 (-in)
someone누군가 (nugunga)
soul영혼 (yeonghon); 혼백 (honbaek)
Specialized synonyms for friend in Korean
brother형제 (hyeongje); 형님 (hyeongnim); 오빠 (obba); 동생 (dongsaeng); 아우 (au)
comrade동지 (dongsi); (dongmu)
light가볍다 (gabyeopda)
Derivative terms for friend in Korean
friendship우정 (ujeong)