Barbarism, barbarity are frequently confused.
Barbarism is used chiefly of a state of society or of a culture that may be described as barbarian, or as neither savage and crude nor civilized and highly refined.
Barbarity is used chiefly in reference to a temper or to practices that may be described as barbarous, or uncivilized, brutal, and inhumane.
Sometimes, however, barbarity denotes a taste that is barbaric.