This is the 12100th most frequent Korean word.
누구와
"누구와" means "with whom" in English.
'누구와' is used here to ask about the person accompanying the speaker in going somewhere.
너는 누구와 함께 갈 거니?
Who are you going to go with?
'누구와' is used to inquire about the other party involved in the conversation.
그는 누구와 이야기를 나누고 있어?
Who is he talking with?
'누구와' is employed to ask about the collaborator or discussion partner in relation to a plan.