older sister (if you are a younger female)
언니
Aunt
이모
Younger sibling
동생
older brother (if you are a younger male)
형
grandpa
할아버지
older brother (if you are a younger female)
오빠
Dad
아빠
older sister (if you are a younger male)
누나
Mom
엄마
uncle
삼촌
grandma
할머니