Buttock and Keister

Buttock noun - Either of the two large fleshy masses of muscular tissue that form the human rump.

Keister and buttock are semantically related. in bottom topic. In some cases you can use "Keister" instead a noun "Buttock".

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

Buttock and keister are semantically related. Sometimes you can replace term "Buttock" with "Keister", this nouns are similar.