The base or main part that something is built on.
The house's fundament is its foundation.
그 집의 기초는 그 기초입니다.
The main idea or principle that something is based on.
The fundament of her argument was solid evidence.
그녀의 주장의 기본은 확실한 증거였습니다.
The buttocks.
He fell on his fundament.
그는 엉덩이에 넘어졌습니다.