the.com/discrepancy

means A lack of agreement between two things that are supposed to be the same, like a bill and a receipt, or a story told twice.

from From Latin discrepare, 'to sound discordant' — dis- (apart) plus crepare (to rattle, creak, or crack). The Romans used it for clashing noises, voices that wouldn't harmonize; English borrowed it in the 1600s for facts and figures that likewise refuse to sing in tune.