The most common Korean word for “dream” is 꾸다 (kkuda). There is one more word with a similar meaning — compare them below. 「dream」는 한국어로 꾸다.
to dream (a dream)
TOPIK 2 · verb
Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato