What does "interchanging" mean?

The act by which things are interchanged.

Interchanging

Common synonyms include: alternating, alternation, compatibility, cultural exchange, data exchange, exchange.

noun, verb

noun, verb ·Uncommon ·Advanced level

Noun

1
The act by which things are interchanged.
"So the science of phonetic metamorphology concerns itself quite largely with interchangings among the sounds of speech."

Verb

1
present participle and gerund of interchange form-of, gerund, participle, present

"So the science of phonetic metamorphology concerns itself quite largely with interchangings among the sounds of speech."