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