[0] : Common paths[1] : Anti-Common paths
An example of transformations

Determines the common paths between two geometries. This operation is used to find common edges or connections.
Geometrically, Intersecting and Touching are different.
To be more precise: if the boundaries of the geometries overlap, the two geometries are said to Touch each other; if the boundaries of the geometries penetrate each other, the two geometries are said to Intersect each other.