Modifiers matching fault:

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

Simple categories matching abrupt:

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