Midst and Underbelly

Midst noun - An area or point that is an equal distance from all points along an edge or outer surface.

Underbelly and midst are semantically related. In some cases you can use "Underbelly" instead a noun "Midst".

Underbelly noun - A social sphere that exists outside of the mainstream.

Midst and underbelly are semantically related. Sometimes you can use "Midst" instead a noun "Underbelly".