This is the 1059th most frequent Korean word.
주고
"주고" means "giving" or "and give" (from the verb 주다, "to give," often used in compound forms).
In this sentence, '주고' comes from the verb '주다' (to give) and is used to show the action of giving something followed sequentially by another action.
나는 그에게 책을 주고 갔다.
I gave him the book and left.
'주고' here indicates an act of giving followed by another action of staying, connecting two actions smoothly.
그녀는 그를 위해 선물을 주고 머물렀다.
She gave him a gift and stayed.
In this instance, '주고' signifies feeding the dog as the first action, then sequentially moving to playing, focusing on the continuation of events.