One Answer

  1. Whatness – “whatness”, that which constitutes the generic difference of a certain thing from a thing of another kind, makes it a “definite thing”, i.e. its essence. Cf.: https://dic.academic.ru/dic.nsf/eng_rus/837718/whatness

    Thisness – “itness”, that which constitutes the individual difference of a certain thing from another thing of the same kind, makes it exactly “this thing”, i.e. its peculiarity. Cf.: https://dic.academic.ru/dic.nsf/eng_rus/795414/thisness

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