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