We can use -(이)나 between two nouns to mean ‘or’
연필이나 펜 있으면 좀 빌려 주세요
Please lend me a pen or pencil if you have one
가족이나 남자친구가 보고 싶지 않아요?
Don’t you want to see your family or boyfriend?/Don’t you miss you family or boyfriend?
떡국이나 돈까수를 먹자!
Let’s eat ddeokguk or donkatsu!