Modifiers matching obstruction:

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

Simple categories matching removable:

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