1.  discrepancy(n = noun.attribute) disagreement, divergence, variance - a difference between conflicting facts or claims or opinions; "a growing divergence of opinion"
is a kind of difference
has particulars: allowance, leeway, margin, tolerance
Derived forms adjective discrepant₃, adjective discrepant₂, adjective discrepant₁

2.  discrepancy(n = noun.event) variance, variant - an event that departs from expectations;
is a kind of departure, deviation, difference, divergence
Derived form adjective discrepant₃

discrepancy, n. (pl. -ies)
1 difference; failure to correspond; inconsistency.
2 an instance of this.

Derivative:
discrepant adj.

Etymology:
L discrepare be discordant (as DIS-, crepare creak)

N  variation, alteration, modification, moods and tenses, discrepance, discrepancy, divergency, deviation, aberration, innovation, varied, modified, diversified.

N  disagreement, discord, discordance, dissonance, dissidence, discrepancy, unconformity, incongruity, incongruence, discongruity, mesalliance, jarring, dissension, conflict, bickering, clashing, misunderstanding, wrangle, disparity, mismatch, disproportion, dissimilitude, inequality, disproportionateness, variance, divergence, repugnance, unfitness, inaptitude, impropriety, inapplicability, inconsistency, inconcinnity, irrelevancy, misjoining, misjoinder, syncretism, intrusion, interference, concordia discors, fish out of water, disagreeing, discordant, discrepant, at variance, at war, hostile, antagonistic, repugnant, incompatible, irreconcilable, inconsistent with, unconformable, exceptional, intrusive, incongruous, disproportionate, disproportionated, inharmonious, unharmonious, inconsonant, unconsonant, divergent, repugnant to, inapt, unapt, inappropriate, improper, unsuited, unsuitable, inapplicable, not to the point, unfit, unfitting, unbefitting, unbecoming, illtimed, unseasonable, mal a propos, inadmissible, inapposite, uncongenial, ill-assorted, ill-sorted, mismatched, misjoined, misplaced, misclassified, unaccommodating, irreducible, incommensurable, uncommensurable, unsympathetic, out of character, out of keeping, out of proportion, out of joint, out of tune, out of place, out of season, out of its element, at odds with, at variance with, in defiance, in contempt, in spite of, discordantly, a tort et a travers, asinus ad lyram.