Unary union 

This node find unary union of geometries

Convex hull 

This node computes convex hull of geometries

Resample/Warp (Reproject) 

Raster image resample, reprojection and warping node

Remove repeated points 

This node remove repeated points in a geometry

Proximity 

This node generates a raster proximity

Intersection 

This node computes intersection of geometries