different between dubiousness vs dubiosity

English

dubious +? -ness

dubiousness (usually uncountable, plural dubiousnesses)

dubiosity (countable and uncountable, plural dubiosities)

(rare) The state or characteristic of being dubious; a dubious assertion.
- 1646, Thomas Browne, Pseudodoxia Epidemica, London: Edw. Dod & Nath. Ekins, 1650, Book I, Chapter 5, p. 12,^[1]
  […] men often swallow falsities for truths, dubiosities for certainties, sensibilities for possibilities, and things impossible as possibilities themselves.
- 1922, James Joyce, Ulysses, episode 16,
  Possibly perceiving an expression of dubiosity on their faces, the globetrotter went on adhering to his adventures.

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