협심증은 관상동맥이 완전히 막히진 않고 좁아진 상태로 일상생활 중 자주 가슴이 조이듯 아픈 경우를 가리킨다.
Angina is a condition in which the coronary artery is not completely obstructed but narrowed, often causing chest pain as like tightening the chest in daily life.