The most common Korean word for “change” is 바꾸다 (bakkuda). There are 2 more words with a similar meaning — compare them below. 「change」는 한국어로 바꾸다.
to change; to exchange
TOPIK 1 · verb
to change; to be changed
TOPIK 2 · verb
to change; to turn into
TOPIK 2 · verb
Words and levels: TOPIK I essentials (National Institute of Korean Language standard curriculum, KOGL Type 1) · examples: Cheesepotato