At the core of and Midst

Midst and at the core of are semantically related In some cases you can replace term "Midst" with "At the core of", this terms are similar.

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

At the core of and midst are semantically related in in the course of topic. You can use "At the core of" instead a noun "Midst".