Modifiers matching contact:

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

Simple categories matching sliding:

• equipment,
• system,
• part,
• contact,
• means,
• closure,
• component,
• panel,
• vehicle,
• device,
• surface,
• control,
• seat,
• door,
• portion,
• connection,
• board,
• tray,
• sport,
• mechanism,