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