나비 (nabi) means “butterfly” | MotiTan Korean Dictionary

More examples

나비가 꽃에 앉아 있어요.na bi ga kko che an ja i sseo yo

A butterfly is perched on a flower.

A small winged insect that changes from a caterpillar through a pupa before flying as an adult.

나방nabang: A small winged insect that is often active after dark.
곤충konchung: A small six-legged animal found in many different forms.

애벌레에서 번데기를 거쳐 어른이 되어 두 날개로 나는 곤충ae beol le e seo peon de gi reul keo cheo eo reu ni toe eo tu nal gae ro na neun kon chung

The Korean noun 나비 (nabi, "butterfly") is native Korean, although its deeper historical origin is uncertain.

For butterflies, Korean uses a counter for living creatures instead of the general counter for objects.