Modifiers matching contact:

• electrical,
• physical,
• personal,
• important,
• common,
• moving,
• environmental,
• sliding,
• complex,
• dry,
• geologic,
• mechanical,

Simple categories matching geologic:

• material,
• hazard,
• fabric,
• control,
• deposit,
• object,
• process,
• consideration,
• formation,
• condition,
• rock,
• property,
• entity,
• event,
• force,
• structure,
• variable,
• phenomenon,
• system,
• disaster,
• age,
• layer,
• feature,
• upheaval,
• unit,
• activity,
• time,
• agent,
• medium,
• oddity,
• attribute,
• repository,
• equipment,
• location,
• information,
• piece,
• source,
• characteristic,
• reservoir,
• investigation,
• occurrence,
• complexity,
• contact,
• change,