different between implausible vs implausibility

English

From im- +? plausible.

implausible (comparative more implausible, superlative most implausible)

Not plausible; unlikely; dubious.
- 2008, February 17, Mark Liberman, "More on Harper", Language Log,
  Harper finds the idea that Latin developed into the modern Romance languages too implausible to believe.

implausibility (usually uncountable, plural implausibilities)

Lack of plausibility; the quality of being implausible.
Something implausible.
Her story was rejected because of its numerous implausibilities.

implausibility in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
implausibility in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.

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