Modifiers matching episode:

• acute,
• interesting,
• special,
• traumatic,
• geological,
• unpredictable,
• related,
• negative,
• catastrophic,
• sudden,
• physiological,
• textual,
• historical,
• periodic,
• ischaemic,
• unfortunate,
• memorable,
• chaotic,
• violent,
• painful,
• past,
• biblical,
• single,
• cardiovascular,
• new,
• medical,
• criminal,
• neurological,
• stressful,
• exciting,
• meteorological,
• disastrous,
• major,
• multiple,
• tragic,
• volcanic,
• infrequent,
• symptomatic,
• tectonic,

Simple categories matching past:

• activity,
• instrument,
• event,
• thing,
• measure,
• sport,
• training,
• organization,
• illness,
• society,
• condition,
• dish,
• experience,
• emotion,
• content,
• knowledge,
• formation,
• improvement,
• disturbance,
• bill,
• business,
• practice,
• relationship,
• state,
• problem,
• action,
• style,
• perception,
• achievement,
• history,
• civilisation,
• success,
• record,
• disease,
• hazard,
• week,
• obstruction,
• industry,
• works,
• behavior,
• inhabitant,
• happening,
• tradition,
• work,
• feeling,
• situation,
• years,
• attempt,
• movement,
• giant,
• disaster,
• change,
• difficulty,
• competition,
• catastrophe,
• exchange,
• space,
• episode,
• war,