simple past tense and past participle of interchange

Misspelling of interchangeable.

The act by which things are interchanged.

present participle of interchange

Anything that can be interchanged; a substitute.

Freely substitutable; that may be swapped at will. / Following each other in alternate succession; alternating.

The quality of being interchangeable.

With the ability of being interchanged or swapped.

(transitive) to switch (each of two things) / (transitive) to mutually give and receive (something); to exchange / (intransitive) to swap or change places

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