indistinguishability(n = noun.attribute) identicalness, identity - exact sameness; "they shared an identity of interests"
is a kind of sameness
has particulars: oneness, unity, selfsameness
Derived form adjective indistinguishable1
smilarity too close to be distinguished; exact sameness. [WordNet 1.5]
N indiscrimination, indistinguishability, indistinctness, indistinction, uncertainty, incomparability, indiscriminate, undistinguished, indistinguishable, undistinguishable, unmeasured, promiscuous, undiscriminating, valeat quantum valere potest.