aberrations

/ˌabəˈreɪʃ(ə)n/

noun

A departure from what is normal, usual, or expected, typically an unwelcome one.

they described the outbreak of violence in the area as an aberration

anomaly,deviation,divergence,abnormality,irregularity,variation,digression,edge case,freak,rogue,rarity,quirk,oddity,curiosity,mistake