Simple categories matching ferrous:

• tool,
• equipment,
• metal,
• article,
• object,
• material,
• tube,
• fastener,
• structure,
• pipeline,
• part,
• contaminant,
• substrate,
• actuator,
• wire,
• alloy,
• body,
• scrap,
• target,
• hardware,
• item,
• surface,
• plate,
• ore,
• artefact,
• particle,
• salt,
• mineral,
• product,
• conduit,

Members with property ferrous:

• iron,
• electric_motor,
• steel,
• ballast,
• silicate,
• slab,
• bolt,
• magnesium,
• sign,
• pick,
• screw,
• nut,
• sheet_steel,
• steel_disk,
• iron_nail,
• copper,
• ferrous_gear,
• high_carbon,
• washer,
• nail,
• staple,
• rod,
• water_pipeline,
• hair_pin,
• nickel,
• cylinder,
• steel_panel,
• commercial_ship,
• plate,
• alloyed_steel,
• screwdriver,
• gutter,
• cast-iron_pipe,
• shield,
• sheet,
• hornblende,
• motor_cycle,
• steel_container,
• steel_pipe,
• valve_cover,
• wristwatch,
• corrugated_metal,
• steel_sheet,
• tanker_truck,
• infusion,
• tube,
• spring_steel,
• wheel_gear,
• stove,
• steel_vehicle,
• fingernail_file,
• fe,
• automobile,
• lead,
• tool_box,
• low_carbon,
• ferric_sulphate,
• bus,
• heavy_part,
• copper_scrap,
• construction_debris,
• hematite,
• cast-iron_water,
• corrugated_steel,
• metallic_desk,
• brass,
• gold,
• chromite,
• iron_chain,
• airplane,
• radiator,
• ferrous_sulphate,
• anchor,
• vehicle,
• deck_screw,
• gates,
• wire_rope,
• metal,
• panel,
• garden_furniture,
• mechanical_tool,
• nickel_ore,
• archaeological_artefact,
• aerospace_material,
• spline,
• vehicle_roof,
• ordnance,
• gas_bottle,
• annular_race,
• lamppost,
• knife,
• cadmium,
• circular_hub,
• wire_brush,
• fence,
• steel_powder,
• pyrite,
• ca,
• unexploded_ordnance,
• approach,
• pipeline,
• olivine,
• conduit,
• girder,
• aluminium,
• water,
• zinc,
• gear_tooth,
• metal_tool,
• guitar_string,
• platinum,
• tweezer,
• token,
• pocketknife,
• bicycle,
• furniture,
• grill,
• iron_pipe,
• refrigerator,
• flagpole,
• grey_iron,
• steel_tower,
• submarine_hull,
• permalloy,
• steel_conduit,
• tank,
• meteorite,
• engine,
• train,
• debris,
• motor_block,
• pen,
• refrigerator_panel,
• hairpin,
• turbine_blade,
• landing-gear_component,
• wire,
• austenitic_iron,
• hammer,
• bronze,
• special_nut,
• biotite,
• pewter,
• pyroxene,
• jewelry,
• carbon-steel_pipe,
• gear,
• head,
• disk,
• railing,
• passing_train,
• chrome,
• iron_oxide,
• ta,
• gas,
• shipwreck,
• high_alloy,
• ballast_tank,
• part,
• iron_cannon,
• rail_car,
• chain,
• cast_steel,
• pin,
• gun,
• service,
• sewage_line,
• boiler,
• magnetic_shield,
• floor_polisher,
• car_body,
• mixed_scrap,
• ferric_chloride,
• carbon-steel_wire,
• ferric_nitrate,
• pipe,
• copper_alloy,
• shadow_mask,
• shovel,
• round_nut,
• cast-iron_pan,
• pass,
• ilmenite,
• structural_steel,
• tool,
• steel_shelf,
• submarine_passing,
• titanium_alloy,
• ferrite,
• goethite,
• drywall_screw,
• siderite,
• stainless,
• chromium,
• cobalt,
• pipe_flange,
• sword,
• control_linkage,
• silver,
• blade_tip,
• aircraft,
• oil,
• molten_steel,
• plane,
• magnetite,
• ductile_iron,
• socket,
• zirconium,
• titanium,
• ferrous_chloride,
• keel,
• car_hood,
• certain_steel,
• metal_instrument,
• casting,
• co,
• sphere,
• iron_framework,
• aluminum,
• tungsten,
• house,
• brass_scrap,
• motor,
• desk,
• ship,
• balcony,
• submarine,
• pyrrhotite,
• special_alloy,
• similar_material,
• paper,
• slug,
• steel_rod,
• ring_gear,
• cable,
• powder_metal,
• mild_steel,
• brass_metal,
• truck,
• condenser,
• steel_tank,
• fastener,
• key,
• drum,
• car,
• copper_metal,
• light_iron,
• block,
• oxygen_tank,
• robot_chassis,