Modifiers matching occurrence:

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

Simple categories matching elemental:

• precursor,
• quality,
• material,
• condition,
• metal,
• sphere,
• system,
• atom,
• conductor,
• substance,
• energy,
• force,
• phenomenon,
• semiconductor,
• shape,
• dimension,
• conflict,
• mineral,
• carbon,
• solid,
• nutrient,
• service,
• staff,
• contaminant,
• implement,
• source,
• constituent,
• fluorine,
• necessity,
• component,
• gas,
• matter,
• nonmetal,
• hydrogen,
• crystal,
• trait,
• cu,
• fluid,
• nc,
• particle,
• chemical,
• property,
• affinity,
• state,
• hazard,
• ability,
• cycle,
• cluster,
• indicator,
• form,
• course,
• carbohydrate,
• unit,
• location,
• event,
• point,
• compound,
• isotope,
• concentration,
• composition,
• temple,
• quantity,
• ratio,
• power,
• danger,
• sulfur,
• attribute,
• process,
• entity,
• stuff,
• halogen,
• analysis,
• nitrogen,
• substrate,
• thing,
• influence,
• content,
• oxide,
• structure,
• oxygen,
• occurrence,
• attack,
• theme,
• fraction,