Share 'Removing points from points'

Hi, I am working on a university project in grasshopper. I am totally new in the program, and I have come to a problem that I cannot solve.  I have created to types of buildings, industry and housing, using pop2d-points. They are placed in the same area, which causes that some of the building a placed on top of each other. My question is; how do I create a hierarchy so that the industry eliminate…