Bones and Rachises

Bones noun - A percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance.

Rachises and bones are semantically related. In some cases you can use "Rachises" instead a noun "Bones".

Bones and rachises are semantically related. You can use "Bones" instead a noun "Rachises".