The difference between Intersection and Junction

Intersection as a noun:

The junction of two (or more) paths, streets, highways, or other thoroughfares.

Intersection as a noun (geometry):

The point or set of points common to two geometrical objects (such as the point where two lines meet or the line where two planes intersect).

Intersection as a noun (set theory):

The set containing all the elements that are common to two or more sets.

Intersection as a noun (sports):

The element where two or more straight lines of synchronized skaters pass through each other.[http://www.isu.org/vsite/vcontent/content/transnews/0,10869,4844-128590-19728-18885-295370-3787-4771-layout160-129898-news-item,00.html]

Intersection as a noun (category theory):

The pullback of a corner of monics.

Junction as a noun:

The act of joining, or the state of being joined.

Junction as a noun:

A place where two things meet, especially where two roads meet.

Junction as a noun:

The boundary between two physically different materials, especially between conductors, semiconductors, or metals.

Junction as a noun (nautical):

The place where a distributary departs from the main stream.

Junction as a noun (rail transport):

A place where two or more railways or railroads meet.

Junction as a noun (radio, television):

A point in time between two unrelated consecutive broadcasts.

Junction as a noun (computing, Microsoft Windows):

A kind of symbolic link to a directory.

Junction as a verb:

(of roads or tracks) to form a junction