Modifiers matching fault:

• mental,
• transient,
• visible,
• external,
• hard,
• functional,
• electrical,
• catastrophic,
• minor,
• internal,
• independent,
• structural,
• technical,
• motor,
• mechanical,
• permanent,
• major,
• dynamic,
• normal,
• large,
• planar,
• common,
• abrupt,
• random,
• local,
• small,

Simple categories matching abrupt:

• feature,
• change,
• disturbance,
• motion,
• fault,
• variation,
• structure,
• event,