Modifiers matching covering:

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

Simple categories matching nonstructural:

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