Modifiers matching break:

• short,
• natural,
• logical,
• meaningful,
• vertical,
• major,
• long,
• physical,
• structural,
• residential,
• additional,
• unpredictable,
• visual,
• conceptual,
• over,
• everyday,
• architectural,

Simple categories matching unpredictable:

• risk,
• blessing,
• situation,
• event,
• danger,
• catastrophe,
• occurrence,
• system,
• contingency,
• object,
• process,
• break,
• elements,
• force,
• disturbance,
• cause,
• thing,
• change,
• behaviour,
• current,
• phenomenon,
• incident,
• circumstances,
• fluctuation,
• weather,
• episode,
• noise,
• signal,
• accident,
• condition,
• problem,
• illness,
• motion,
• sound,
• disease,
• domain,
• hazard,
• disaster,
• misfortune,
• action,
• upheaval,
• shock,
• storm,
• disruption,
• disorder,