Modifiers matching membrane:

• natural,
• sensitive,
• excitable,
• active,
• biological,
• collagenous,
• multicellular,
• flexible,
• refractory,
• imperforate,
• warm,
• impermeable,
• elastic,
• protective,
• circular,
• metallic,
• inorganic,
• waterproof,
• pliable,
• synthetic,
• logical,
• thick,
• epithelial,
• mucosal,
• vascular,
• fetal,
• proteinaceous,
• biologic,
• porous,
• heterogeneous,
• mucous,
• intracellular,
• moist,
• permeable,
• macromolecular,
• homogeneous,
• continuous,
• nonporous,
• impervious,
• extracellular,
• internal,
• intact,
• thin,
• cellular,
• resonant,

Simple categories matching protective:

• packaging,
• protein,
• equipment,
• mineral,
• clothing,
• factor,
• zone,
• measure,
• item,
• structure,
• information,
• fabric,
• area,
• property,
• hardware,
• component,
• conduit,
• apparel,
• system,
• service,
• material,
• garment,
• membrane,
• agent,
• defence,
• fence,
• apparatus,
• metal,
• oil,
• agency,
• organization,
• solute,
• coat,
• wrap,
• coating,
• particle,
• food,
• case,
• instrument,
• pigment,
• lotion,
• closure,
• phytochemical,
• cover,
• lubricant,
• object,
• mechanism,
• shell,
• plate,
• behaviour,
• container,
• care,
• quality,
• unit,
• mattress,
• outerwear,
• skin,
• siding,
• market,
• practice,
• action,
• insulator,
• herb,
• sediment,
• foodstuff,
• film,
• order,
• molecule,
• surface,
• force,
• switch,
• cushioning,
• overclothes,
• works,
• substance,
• enzyme,
• appliance,
• ointment,
• behavior,
• footwear,
• nutrient,
• relay,
• compound,
• seal,
• security,
• tissue,
• charm,
• packing,
• gas,
• installation,
• paste,
• sugar,
• chamber,
• support,
• fluid,
• brace,
• covering,
• application,
• device,
• garb,
• element,
• enclosure,
• part,
• drug,
• mask,
• insect,
• sheet,
• procedure,
• constituent,
• wrapping,
• clothes,
• hat,
• group,
• space,
• cloth,
• border,
• article,
• institution,
• antibody,
• arrangement,
• circuit,
• antioxidant,
• placement,
• oxide,
• housing,
• atmosphere,
• tree,
• accessory,
• chemical,
• feature,
• product,
• guard,
• layer,
• modality,
• fat,
• liquid,
• pad,
• construction,
• defense,
• helmet,
• habit,
• elements,
• means,
• line,
• envelope,
• glove,
• gadget,
• diet,
• process,
• headgear,
• colloid,
• matrix,
• tape,
• shelter,
• wax,
• characteristic,
• package,
• attire,
• adhesive,
• adult,
• devices,
• gel,
• barrier,
• modification,
• facility,
• armour,
• cell,
• hydrocolloid,
• bag,
• activity,
• carrier,
• polymer,
• plating,
• shade,
• gear,