Bones and Soul case

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.

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

Bones and soul case are semantically related. You can use "Bones" instead a noun phrase "Soul case".