anomalies.

a·nom·a·ly

əˈnäməlē/

noun

plural noun: anomalies

1. 1.

   something that deviates from what is standard, normal, or expected.

   "there are a number of anomalies in the present system"

   synonyms:

   oddity, peculiarity, abnormality, irregularity, inconsistency, incongruity,aberration, quirk, rarity "the growth on the duck's bill is a harmless anomaly"