Difference between reservation and seat in Korean
예약·자리

예약reservation
"Reservation" means saving a seat, ticket, or service before you use it. In transport, people use 예약 for trains, buses, planes, ferries, or taxis. You can make a reservation online, by phone, or at a ticket counter.

자리seat
자리 means a seat or a place where someone can sit. In transport, you can use it for a seat on a bus, train, or subway. You can also use it when asking if a seat is empty or telling someone to sit down.
The difference
reservation (예약) and seat (자리) are nearby Korean vocabulary items learners often meet together. Use “reservation” when "Reservation" means saving a seat, ticket, or service before you use it. In transport, people use 예약 for trains, buses, planes, ferries,… Use “seat” when 자리 means a seat or a place where someone can sit. In transport, you can use it for a seat on a bus, train, or subway. You can also use it…