Category Nuances for lignin:

• organic,
• domestic,
• amorphous,
• polymeric,
• damaging,
• structural,
• polar,
• harmless,
• biochemical,
• liquid,
• insoluble,
• hydrophobic,
• complex,
• biodegradable,
• indigestible,
• chemical,
• anionic,
• essential,
• available,
• nonvolatile,
• hygroscopic,
• aromatic,
• heterogeneous,
• natural,
• residual,
• harmful,
• undesirable,
• resistant,
• sensitive,
• noncombustible,
• fibrous,
• volatile,
• inexpensive,
• moving,
• soluble,
• suspended,
• biological,
• solid,
• macromolecular,
• unwanted,
• useless,
• stable,
• isolated,
• nutritious,
• cellular,
• friendly,
• interfering,
• diverse,
• refractory,
• repellent,
• dissolved,
• large,
• dense,
• cationic,
• individual,
• synthetic,
• important,
• persistent,
• carbonaceous,
• dry,
• acid,
• secondary,
• rich,
• robust,
• extraneous,
• nutritional,
• hydrophilic,
• hard,
• protective,
• basic,
• impure,
• miscellaneous,
• artificial,
• ordinary,
• nitrogenous,
• dietary,
• inert,
• binding,
• complicated,
• molecular,
• remaining,
• extractable,
• industrial,
• inhibitory,
• renewable,
• small,
• primary,
• colloidal,
• woody,
• raw,
• digestible,
• tough,

Simple Categories for lignin:

• fibre,
• waste,
• matter,
• material,
• compound,
• unit,
• substance,
• polymer,
• fiber,
• contaminant,
• component,
• derivative,
• group,
• part,
• solid,
• mixture,
• fraction,
• solute,
• precursor,
• chemical,
• constituent,
• acid,
• attribute,
• entity,
• substrate,
• particle,