Buttocks and Breeches

Buttocks noun - The part of the body upon which someone sits.

Breeches and buttocks are semantically related In some cases you can use "Breeches" instead a noun "Buttocks".

Breeches noun - Trousers ending above the knee.

Buttocks and breeches are semantically related in bottom topic. Sometimes you can use "Buttocks" instead a noun "Breeches", if it concerns topics such as rear end.