The most common Korean word for “breakdown” is 고장 (gojang). 「breakdown」는 한국어로 고장.
Learn 고장 free — flashcards, audio and review →「고장」 단어장으로 무료로 외우기Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato