This is the 366th most frequent Korean word.
나오고
"나오고" means "coming out" or "appearing."
Here, '나오고' indicates the literal action of coming out of the water.
물에서 물고기가 나오고 있어요.
A fish is coming out of the water.
In this sentence, '나오고' refers to the sequence of individuals coming out.
다음에 친구들이 나오고 다음은 우리가 나갈 차례예요.
Next, friends come out and then it’s our turn to exit.
Here, '나오고' metaphorically means ideas being generated or presented.