Modifiers matching occurrence:

• tragic,
• natural,
• unwanted,
• exogenous,
• unforeseen,
• discrete,
• severe,
• inanimate,
• serious,
• unexpected,
• extreme,
• deadly,
• unusual,
• dangerous,
• violent,
• geologic,
• extraordinary,
• devastating,
• special,
• sudden,
• motivational,
• unfortunate,
• periodic,
• routine,
• harmful,
• interesting,
• unpredictable,
• damaging,
• social,
• exceptional,
• commonplace,
• stressful,
• historical,
• autonomic,
• catastrophic,
• interactive,
• superficial,
• happy,
• small,
• outside,
• corporeal,
• acoustic,
• uncertain,
• localised,
• costly,
• cataclysmic,
• disastrous,
• possible,
• operational,
• criminal,
• supernatural,
• neurologic,
• external,
• unanticipated,
• future,
• environmental,
• elemental,
• dynamic,
• recent,
• strange,
• political,
• unique,
• seismic,
• irregular,
• disruptive,
• simple,
• undesirable,
• meaningful,
• musical,
• neurological,
• outdoor,
• major,
• single,
• unpleasant,
• terrifying,
• accidental,
• odd,
• relevant,
• temporary,
• unavoidable,
• deviant,
• benign,
• adverse,
• physical,
• everyday,
• miscellaneous,
• annual,
• traumatic,
• unlikely,
• geographical,
• negative,
• positive,
• normal,
• dramatic,
• random,
• infrequent,
• common,
• rare,
• spontaneous,
• medical,
• significant,
• specified,
• ordinary,
• awesome,
• abnormal,
• internal,
• organizational,
• seasonal,
• local,
• untoward,
• weather,
• planned,
• transient,
• cosmic,
• astronomical,
• unforeseeable,
• climatic,
• unplanned,
• hazardous,

Simple categories matching astronomical:

• happening,
• hardware,
• event,
• object,
• subject,
• phenomenon,
• symbol,
• instrument,
• body,
• thing,
• structure,
• matter,
• data,
• time,
• apparatus,
• patch,
• project,
• quantity,
• equipment,
• hazard,
• occurrence,
• cycle,
• concept,
• information,
• feature,
• catastrophe,
• research,
• system,