Simple categories matching homogenous:

• area,
• commodity,
• tissue,
• material,
• substance,
• vegetation,
• system,
• product,

Members with property homogenous:

• steel,
• metal,
• asphalt,
• house,
• coffee,
• paint,
• similar_material,
• aluminium,
• soil,
• muscle,
• aluminum,
• street,
• thermoset_polyurethane,
• titanium,
• western_community,
• plastic_sheet,
• chicken_feather,
• garden,
• watershed,
• polyethylene,
• liquid,
• county,
• foodstuff,
• wood,
• basic_foodstuff,
• liquid_extract,
• lawn,
• tropical_rainforest,
• water,
• rubber,
• liver,
• powder,
• agricultural_goods,
• coating,
• pulp,
• industrial_district,
• cement,
• book,
• gas,
• nickel,
• sheet_rubber,
• crystal,
• aluminum_ingot,
• wood_waste,
• blood,
• tobacco,
• single_crystal,
• typical_sandstone,
• fresh_fruit,
• isotropic_liquid,
• bone,
• polymer_material,
• oil,
• obsidian,
• lumber,
• paper,
• solid,
• pure_polymer,
• iron,
• wash,
• city,