The noun intersection has 6 senses (first 2 from tagged texts)
1. (10) intersection, intersection point, point of intersection -- (a point where lines intersect)
2. (2) intersection, crossroad, crossway, crossing, carrefour -- (a junction where one street or road crosses another)
3. intersection -- (a point or set of points common to two or more geometric configurations)
4. intersection, product, cartesian product -- (the set of elements common to two or more sets; "the set of red hats is the intersection of the set of hats and the set of red things")
5. overlap, convergence, intersection -- (a representation of common ground between theories or phenomena; "there was no overlap between their proposals")
6. intersection -- (the act of intersecting (as joining by causing your path to intersect your target's path))