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