Category Nuances for stiffness:

• rheological,
• single,
• tensile,
• physical,
• mechanical,
• physicochemical,
• characteristic,
• structural,
• random,
• qualitative,
• desirable,
• macroscopic,
• important,
• inherent,
• fundamental,
• joint,
• tactile,
• technical,
• attractive,
• exceptional,
• acoustic,
• key,
• viscoelastic,
• dynamic,
• exciting,
• original,
• measurable,
• advantageous,
• unique,
• elastic,
• layer,
• main,
• initial,
• superior,
• distinct,
• superficial,
• static,
• special,
• technological,
• excellent,
• natural,
• internal,
• typical,
• necessary,
• desired,
• global,
• physiological,
• concrete,
• undesirable,
• intrinsic,
• solid,
• related,
• outstanding,
• damaging,
• individual,
• average,
• additional,
• aggregate,
• vital,
• thermal,
• secondary,
• complex,
• plastic,
• favorable,
• essential,
• good,
• positive,
• pertinent,
• architectural,
• critical,
• same,
• cellular,
• beneficial,
• practical,
• dynamical,

Simple Categories for stiffness:

• characteristic,
• quality,
• behaviour,
• fibre,
• property,
• difficulty,
• attribute,
• behavior,
• quantity,
• uncertainty,