synchroneity vs synchrony

synchroneity and synchrony both are nouns.

Word	Noun	Adjective	Verb	Adverb
synchroneity	Yes	No	No	No
synchrony	Yes	No	No	No

As nouns, synchroneity and synchrony are synonyms defined as:

synchroneity and synchrony: the relation that exists when things occur at the same time

Other synonyms of synchroneity include synchronicity, synchronisation, synchronism, synchronization, synchronizing.

synchroneity (noun)	synchrony (noun)
the relation that exists when things occur at the same time	the relation that exists when things occur at the same time