Modifiers matching covering:

• bony,
• special,
• facial,
• resilient,
• protective,
• delicate,
• decorative,
• impermeable,
• fleshy,
• impervious,
• nonstructural,
• indoor,
• interior,
• wet,
• extensive,
• metallic,
• traditional,
• pedestrian,
• woolen,
• outer,
• loose,
• vegetative,
• softer,
• permanent,
• black,
• coarse,
• plastic,
• functional,
• conventional,
• external,
• medical,
• animal,
• exterior,
• simple,
• weatherproof,
• fragile,
• rigid,
• brittle,
• alternative,
• lightweight,
• new,
• finished,
• sensitive,
• outdoor,
• thin,
• dark,
• soft,
• nonmagnetic,
• waterproof,
• seasonal,
• overhead,
• temporary,
• transparent,
• flexible,
• additional,

Simple categories matching nonstructural:

• carbohydrate,
• material,
• location,
• covering,
• coating,
• means,
• panel,
• damage,
• polysaccharide,
• relationship,
• measure,
• use,
• application,
• component,
• system,
• barrier,
• furnishing,