Point Cloud based relationships are much the same as points based relationships with a slight difference in that they offer different filtering and colorization options designed to work with point cloud data sets.
Cloud to Objects. Creates a clouds to objects relationship used to compare the cloud points from the selected point clouds to the selected objects.
Clouds to CAD Faces. Creates a clouds to objects relationship used to compare to a selection of CAD faces.
Cloud to Swatch. Builds a swatch relationship used for surface point analysis. It then builds a mini cloud using only cloud points within a proximity to the reference point and a surface normal vector. The resulting computed point uses the average distance values in the cloud swatch to compute the point offset.