The Collaborative International Dictionary of English v.0.48:

Discrepance \Dis*crep"ance\ (?; 277), Discrepancy
\Dis*crep"an*cy\, n.; pl. -ances, -ancies. [L. disrepantia:
   cf. OF. discrepance. See Discrepant.]
   The state or quality of being discrepant; disagreement;
   variance; discordance; dissimilarity; contrariety.
   [1913 Webster]

         There hath been ever a discrepance of vesture of youth
         and age, men and women.                  --Sir T.
                                                  Elyot.
   [1913 Webster]

         There is no real discrepancy between these two
         genealogies.                             --G. S. Faber.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "discrepancy":
   antagonism, antipathy, antithesis, argumentation, balance,
   clashing, collision, conflict, confrontation, contradiction,
   contradistinction, contraindication, contraposition, contrariety,
   contrast, controversy, counterposition, credit, cross-purposes,
   deficit, departure, deviation, difference, disaccord,
   disaccordance, disagreement, disconformity, discongruity, discord,
   discordance, discordancy, discreteness, disharmony, disparity,
   dissemblance, dissension, dissent, dissidence, dissimilarity,
   dissimilitude, dissonance, distinction, distinctness, disunion,
   disunity, divergence, divergency, diversity, epact, faction,
   far cry, gap, heterogeneity, hostility, inaccordance,
   incompatibility, incongruity, inconsistency, inconsonance,
   inequality, inharmoniousness, inharmony, inimicalness,
   irreconcilability, jarring, lacuna, mixture, negation, net,
   nonconformity, odds, oppositeness, opposition, opposure,
   oppugnance, oppugnancy, otherness, perversity, polarity, remainder,
   repugnance, separateness, showdown, surplus, unconformity,
   unharmoniousness, unlikeness, unorthodoxy, variance, variation,
   variegation, variety