Modifiers matching stimulus:

• painful,
• stressful,
• extracellular,
• constant,
• external,
• cytotoxic,
• rhythmic,
• internal,
• chronic,
• damaging,
• innocuous,
• sensory,
• abnormal,
• outside,
• noxious,
• psychic,
• familiar,
• strong,
• special,
• physiologic,
• unpleasant,
• natural,
• visual,
• mental,
• temporal,
• stimulating,
• individual,
• mechanical,
• negative,
• simple,
• auditory,
• physiological,
• standard,
• emotional,
• real,
• pictorial,
• positive,
• pathologic,
• subtle,
• organizational,
• transient,
• biological,
• harmful,
• complex,
• pathological,
• rewarding,
• instructional,
• light,
• monotonous,
• extraneous,
• nonspecific,
• aversive,
• distressing,
• major,
• prolonged,
• old,
• neutral,
• environmental,
• artificial,
• noninfectious,
• intense,
• multiple,
• inflammatory,
• adverse,
• detrimental,
• subjective,
• peripheral,
• local,
• distinct,
• physical,
• ambient,
• supplemental,
• cellular,
• electrical,
• maternal,
• diverse,
• exogenous,
• identifiable,
• chemical,
• social,

Simple categories matching mechanical:

• check,
• property,
• injury,
• equipment,
• influence,
• part,
• irritation,
• creation,
• trauma,
• area,
• appliance,
• weaponry,
• system,
• means,
• causality,
• abrasive,
• drive,
• study,
• object,
• attribute,
• article,
• function,
• structure,
• issue,
• oscillation,
• item,
• effort,
• installation,
• movement,
• strength,
• abuse,
• fastener,
• termination,
• particle,
• device,
• connector,
• protection,
• craft,
• valve,
• gauge,
• test,
• arrangement,
• problem,
• difficulty,
• abnormality,
• cause,
• arena,
• accident,
• stimulus,
• service,
• coupling,
• contraption,
• facility,
• data,
• measure,
• condition,
• event,
• coupler,
• artifact,
• activity,
• anchorage,
• sander,
• disturbance,
• barrier,
• lubricant,
• harvester,
• field,
• engineer,
• substrate,
• opening,
• indicator,
• shock,
• modality,
• knot,
• implement,
• fastening,
• damage,
• toy,
• pattern,
• apparatus,
• modification,
• being,
• obstruction,
• nature,
• relic,
• excavator,
• assembly,
• error,
• machine,
• factor,
• subsystem,
• actuation,
• instrument,
• imperfection,
• contrivance,
• quality,
• creature,
• overload,
• measurement,
• deformation,
• gates,
• plant,
• skill,
• resistance,
• balance,
• filter,
• instrumentation,
• principle,
• contaminant,
• line,
• distortion,
• seal,
• linkage,
• distribution,
• input,
• mill,
• sound,
• invention,
• trouble,
• component,
• stress,
• trap,
• behavior,
• form,
• hazard,
• job,
• arm,
• integrity,
• pump,
• whole,
• guide,
• gear,
• task,
• dredge,
• cooling,
• frame,
• subject,
• fixing,
• impairment,
• feature,
• phenomenon,
• intervention,
• purpose,
• release,
• pick,
• transducer,
• printer,
• shutter,
• material,
• separation,
• constraint,
• radiation,
• elements,
• breakdown,
• element,
• ground,
• figure,
• requirement,
• response,
• hardware,
• compartment,
• operation,
• testing,
• spring,
• agitation,
• thing,
• character,
• parameter,
• lock,
• production,
• devices,
• matter,
• appendage,
• pressure,
• aspect,
• wave,
• software,
• details,
• perturbation,
• engine,
• contact,
• transport,
• procedure,
• engineering,
• vehicle,
• links,
• impact,
• carrier,
• actuator,
• power,
• surface,
• noisemaker,
• malfunction,
• noise,
• interference,
• binding,
• machinery,
• tool,
• quantity,
• change,
• complication,
• improvement,
• performance,
• calculator,
• module,
• arts,
• accuracy,
• piano,
• mechanism,
• dispenser,
• failure,
• joint,
• switch,
• method,
• converter,
• housing,
• environment,
• dryer,
• fitting,
• detector,
• specification,
• assistance,
• trade,
• terminal,
• conveyance,
• signal,
• collector,
• pet,
• compressor,
• lesion,
• way,
• cultivation,
• technique,
• impurity,
• handbook,
• strain,
• shape,
• drawing,
• output,
• organs,
• readout,
• weapon,
• tissue,
• interaction,
• record,
• tie,
• member,
• practice,
• control,
• piece,
• operations,
• variable,
• works,
• information,
• timer,
• obstacle,
• force,
• block,
• separator,
• science,
• characteristic,
• mistake,
• fixture,
• gage,
• sieve,
• applicator,
• circuit,
• cable,
• support,
• jolt,
• display,
• vibration,
• application,
• abrasion,
• loading,
• connection,
• defect,
• processing,
• fault,
• counter,
• action,
• mixer,
• product,
• feeder,
• work,
• entity,
• spreader,
• scale,
• unit,
• specialist,
• level,
• sensor,
• necessity,
• attachment,
• representation,
• energy,
• knife,
• agent,
• fluid,
• restraint,
• sensation,
• behaviour,
• motion,
• stuff,
• controller,
• process,
• contraceptive,
• dispersion,
• closure,
• stimulation,
• design,
• ventilation,
• perception,
• gadget,
• rope,
• deficiency,
• medium,
• cutter,
• cam,
• engagement,
• danger,
• anemometer,
• space,
• crusher,