Modifiers matching obstacle:

• natural,
• movable,
• rectangular,
• moving,
• physical,
• concrete,
• local,
• elevated,
• fixed,
• difficult,
• architectural,
• unusual,
• high,
• permanent,
• artificial,
• psychological,
• removable,
• opaque,
• solid,
• additional,
• stationary,
• rural,
• size,
• special,
• environmental,
• common,
• large,
• institutional,
• visual,
• external,
• passive,
• overhead,
• wooden,
• penetrating,
• dangerous,
• hazardous,
• clear,
• interfering,
• private,
• distant,
• impenetrable,
• practical,
• working,
• multiple,
• single,
• adjacent,
• tall,
• geological,
• tricky,
• advanced,
• urban,
• small,
• static,
• simple,
• nearby,
• rigid,
• dynamic,
• mechanical,
• underground,
• linear,
• soft,
• porous,
• vertical,
• everyday,
• creative,
• outdoor,
• dense,
• geographic,
• world,
• structural,
• typical,
• over,
• thick,
• coming,
• narrow,
• extensive,
• unmovable,

Simple categories matching moving:

• formation,
• part,
• object,
• conveyor,
• device,
• edge,
• organism,
• fixture,
• equipment,
• panel,
• phenomenon,
• water,
• item,
• vehicle,
• pattern,
• source,
• thing,
• mirror,
• animal,
• hazard,
• poultry,
• picture,
• pedestrian,
• prey,
• function,
• subject,
• food,
• material,
• installation,
• valve,
• user,
• limb,
• extremity,
• liquid,
• storm,
• point,
• matter,
• shellfish,
• host,
• sculpture,
• box,
• feature,
• expense,
• craft,
• status,
• planet,
• blocker,
• livestock,
• air,
• bug,
• clothes,
• conductor,
• toy,
• piece,
• help,
• body,
• watercourse,
• closure,
• mass,
• head,
• ball,
• ice,
• frontier,
• abrasive,
• benthos,
• surface,
• mammal,
• watercraft,
• ion,
• dislocation,
• projectile,
• action,
• boat,
• event,
• commodity,
• shape,
• bird,
• apparatus,
• appendage,
• contact,
• invertebrate,
• entity,
• system,
• measure,
• path,
• clothing,
• image,
• current,
• document,
• aircraft,
• agent,
• insect,
• fish,
• line,
• article,
• appliance,
• location,
• region,
• force,
• supply,
• plant,
• component,
• time,
• service,
• means,
• machinery,
• skill,
• process,
• boundary,
• web,
• tumour,
• field,
• heater,
• contaminant,
• element,
• state,
• conveyance,
• job,
• bait,
• joint,
• organs,
• light,
• stuff,
• sheet,
• sediment,
• furniture,
• sensor,
• assembly,
• business,
• shaft,
• facility,
• house,
• solute,
• instrument,
• platform,
• pest,
• vertebrate,
• content,
• door,
• target,
• luggage,
• crustacean,
• attribute,
• links,
• activity,
• fluid,
• wall,
• tool,
• container,
• violation,
• control,
• tissue,
• quarry,
• soil,
• fowl,
• graphics,
• game,
• substrate,
• vessel,
• furnishing,
• barrier,
• display,
• member,
• transport,
• person,
• building,
• machine,
• industry,
• technology,
• devices,
• mixture,
• predator,
• implement,
• key,
• substance,
• pump,
• resource,
• protein,
• freight,
• indicator,
• pointer,
• elements,
• mechanism,
• spacecraft,
• organ,
• behavior,
• product,
• dance,
• medium,
• unit,
• base,
• creature,
• connection,
• belt,
• framework,
• signal,
• operations,
• controller,
• rod,
• cell,
• waterway,
• coil,
• accessory,
• sport,
• particle,
• area,
• landslide,
• obstacle,
• map,
• structure,
• gas,
• file,
• club,
• discipline,