Hi I can say that just "나다" itself doesn't fully determine the meaning of it as it can be different verbs depending on what word it integrates with. For example when you say 열이 나다, it means you have a fever whereas 콧물이 나다 means you have a runny nose. Additionally I'm not sure if you know but 나다 itself can mean it's me or this is me in 경상도사투리(well-known dialect in Korea) Hope it helped you:)

nada can have many different meanings, the most common being "to occur" this is used a lot when saying you are sick or got sick in some way.