older sister (you are a younger girl)
언니
older brother (you are a younger girl)
오빠
dad
아빠
grandpa or grandfather
할아버지
daughter
딸
aunt
이모
grandma or grandmother
할머니
Mom
엄마
older sister (you are younger boy)
누나
uncle
삼촌
son
아들
younger sibling
동생
older brother (you are a younger boy)
형