What is the meaning of Interchange?

to switch (each of two things)

to mutually give and receive (something); to exchange

to swap or change places

to alternate; to intermingle or vary

To act as or carry out an interchange (noun, senses 2, 3).

An act of interchanging.

A highway junction in which traffic may change from one road to another without crossing a stream of traffic.

A junction in which traffic may merge to enter or diverge to exit a limited-access highway to access a surface street, without crossing traffic on the main highway.

A connection between two or more lines, services or modes of transport; a station at which such a connection can be made.

A back-and-forth interaction; an exchange.

Source: wiktionary.org