Modifiers matching obstruction:

• impenetrable,
• physical,
• fixed,
• permanent,
• external,
• current,
• bigger,
• mechanical,
• solid,
• temporary,
• vertical,
• minor,
• horizontal,
• clear,
• major,
• nearby,
• terrestrial,
• significant,
• up,
• internal,
• environmental,
• insurmountable,
• nasal,
• overhead,
• hidden,
• artificial,
• larger,
• indoor,
• outdoor,
• visual,
• dense,
• elongated,
• lateral,
• common,
• movable,
• unusual,
• underground,
• isolated,
• past,
• hard,
• featureless,
• low,
• relevant,
• virtual,
• simple,
• discrete,
• geographic,
• urethral,
• surrounding,
• under,
• large,
• adjacent,
• subsurface,
• spatial,
• tall,
• linear,
• metal,
• electrical,
• over,
• layer,
• lighted,
• structural,
• smaller,
• hazardous,
• local,
• level,
• underwater,
• typical,
• multiple,
• immovable,
• upright,
• hydraulic,
• cooler,
• natural,
• raised,
• taller,
• visible,
• additional,
• removable,
• topical,
• short,
• small,
• irregular,
• opaque,
• rigid,

Simple categories matching removable:

• item,
• part,
• weight,
• connection,
• surface,
• equipment,
• card,
• article,
• barrier,
• token,
• clothing,
• contaminant,
• medium,
• location,
• fixing,
• feature,
• piece,
• component,
• upright,
• module,
• bolt,
• means,
• obstruction,
• object,
• tank,
• appliance,
• obstacle,
• material,
• hardware,
• filter,
• structure,
• carrier,
• drive,
• ballast,
• device,
• sediment,
• fastener,
• extra,
• thing,
• adapter,
• content,
• container,
• appurtenance,
• computer,
• cover,
• liner,
• crank,
• gear,
• fitting,
• substance,