Category Nuances for collision:

• environmental,
• marine,
• dynamical,
• geological,
• serious,
• common,
• cosmic,
• external,
• unusual,
• catastrophic,
• destructive,
• rapid,
• major,
• complicated,
• cataclysmic,
• significant,
• routine,
• unpredictable,
• defined,
• casual,
• maritime,
• dynamic,
• unexpected,
• complex,
• accidental,
• celestial,
• conventional,
• random,
• mechanical,
• related,
• sudden,
• exogenous,
• blunt,
• actual,
• subtle,
• undesirable,
• global,
• acute,
• identifiable,
• vehicular,
• thermal,
• abnormal,
• bigger,
• severe,
• tectonic,
• operational,
• discontinuous,
• astrophysical,
• violent,
• unplanned,
• galactic,
• irregular,
• specified,
• secondary,
• single,
• astronomical,
• stochastic,
• detrimental,
• special,
• hazardous,
• physical,
• untoward,

Simple Categories for collision:

• case,
• accident,
• event,
• mishap,
• command,
• calamity,
• happening,
• measure,
• change,
• disaster,
• casualty,
• impact,
• incident,
• catastrophe,
• action,
• outburst,
• motion,
• adversity,
• injury,
• movement,
• dispute,
• fate,
• occurrence,
• quantity,
• failure,
• stroke,
• interference,