peculiarity

As nouns the difference between deviation and peculiarity

is that deviation is the act of deviating; a wandering from the way; variation from the common way, from an established rule, etc.; departure, as from the right course or the path of duty while peculiarity is the quality or state of being peculiar; individuality; singularity.

As nouns the difference between abnormality and peculiarity

is that abnormality is the state or quality of being abnormal; variation; irregularity while peculiarity is the quality or state of being peculiar; individuality; singularity.

As nouns the difference between taxonomy and peculiarity

is that taxonomy is the science or the technique used to make a classification while peculiarity is the quality or state of being peculiar; individuality; singularity.

Abnormalcy is a synonym of peculiarity.

As nouns the difference between peculiarity and abnormalcy

is that peculiarity is the quality or state of being peculiar; individuality; singularity while abnormalcy is alternative form of lang= en.