Modifiers matching foam:

• sensitive,
• pliant,
• pliable,
• polymeric,
• plastic,
• hydrophilic,
• surrounding,
• resilient,
• conventional,
• organic,
• synthetic,
• acoustic,
• rigid,
• metal,
• traditional,
• brittle,
• natural,
• solid,
• flexible,
• thicker,
• porous,
• resinous,
• semirigid,
• structural,
• edible,
• hydrophobic,
• lightweight,
• thermoplastic,
• cellular,
• expanded,
• soft,
• dense,
• thermosetting,
• aqueous,
• stable,
• inexpensive,

Simple categories matching pliable:

• fabric,
• material,
• object,
• thermoplastic,
• tubing,
• substance,
• wood,
• compound,
• polymer,
• matter,
• layer,
• solid,
• skin,
• surface,
• leather,
• composition,
• shingles,
• metal,
• foam,
• tissue,
• membrane,
• medium,