강의lecture 강의록lecture notes 강의실classroom; lecture room 민주주의democracy 의무duty; responsibility; obligation 의무적being mandatory; being obligatory; being compulsory 의무적mandatory; obligatory; compulsory 정의definition 채식주의vegetarianism 초현실주의surrealism

형older brother 형제brothers 친형제one's brother 형제자매sibling 친형one's elder brother 학부형parents; parents of students 형부brother-in-law 형수one's sister-in-law 형씨hyeongssi 형제애brotherhood; sisterhood; fraternal affection

형제brothers 친형제one's brother 형제자매sibling 제자student 형제애brotherhood; sisterhood; fraternal affection 형제지간sibling relationship 호형호제being on brotherly terms; being on fraternal terms 난형난제being almost equal; having trouble telling which is better 도제student; disciple 매제brother-in-law