different between incongruity vs incongruency

English

From Middle French incongruité, from Medieval Latin incongruitas

incongruity (countable and uncountable, plural incongruities)

The state of being incongruous, or lacking congruence.
An instance or point of disagreement
Synonyms: dissimilarity, discrepancy, inconsistency
A thing that is incongruous.

John A. Simpson and Edward S. C. Weiner, editors (1989) , “incongruity”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, ?ISBN

in- +? congruency

incongruency (plural incongruencies)

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