Definitions
1.verbTo switch (each of two things)"to interchange places"
2.verbTo mutually give and receive (something); to exchange
3.verbTo swap or change places
4.verbTo alternate; to intermingle or vary"to interchange cares with pleasures"
5.verbTo act as or carry out an interchange (noun, senses 2, 3).
6.nounThe act by which things are interchanged.