Modifiers matching wood:

• hard,
• solid,
• resinous,
• sacred,
• varnished,
• soft,
• exotic,
• strong,
• formal,
• gleaming,
• expensive,
• natural,
• available,
• dark,
• round,
• tropical,
• particular,
• special,
• precious,
• beautiful,
• diverse,
• fragrant,
• airy,
• powerful,
• light,
• untreated,
• reliable,
• color,
• white,
• native,
• familiar,
• straight,
• redder,
• northern,
• lightweight,
• dead,
• sustainable,
• ornamental,
• grown,
• unusual,
• yellowish,
• colored,
• european,
• local,
• renewable,
• popular,
• valuable,
• economic,
• primary,
• pliable,
• coniferous,
• harder,
• stronger,
• size,
• unpainted,
• fresh,
• brown,
• poisonous,
• tonal,
• clear,
• standard,
• stable,
• exterior,
• oily,
• mixed,
• chinese,
• enough,
• lasting,
• long,
• inexpensive,
• aromatic,
• fibrous,
• compact,
• real,
• wet,
• deciduous,
• unfinished,
• springy,
• unique,
• seasoned,
• commercial,
• working,
• plain,
• reclaimed,
• outdoor,
• uncoated,
• common,
• darker,
• costly,
• dense,
• sweet,
• secondary,
• heavier,
• small,
• abrasive,
• ordinary,
• australian,
• hollow,
• unprocessed,
• semiprecious,
• woven,
• african,
• good,
• heavy,
• flexible,
• marine,
• concerned,
• stained,
• dried,
• simple,
• stout,
• noble,
• uncoloured,
• porous,
• appalachian,
• broadleaf,
• fancy,
• oriental,
• dry,
• danish,
• lighter,
• elastic,
• indonesian,
• scented,
• wild,
• top,
• acid,
• rare,
• delicate,
• foreign,
• american,
• fine,
• raw,
• expressive,
• new,
• massive,
• irish,
• softer,
• antique,
• sturdy,
• attractive,
• durable,
• contemporary,
• thin,
• base,
• nice,
• british,
• indigenous,
• warm,
• domestic,
• tough,
• trim,
• toned,
• evergreen,
• blonde,
• superior,
• traditional,
• brittle,
• decorative,
• important,
• rich,
• coloured,
• english,

Simple categories matching harder:

• genre,
• material,
• stone,
• sport,
• powder,
• metal,
• fabric,
• surface,
• polymer,
• ingredient,
• currency,
• assets,
• food,
• substrate,
• drug,
• filler,
• medium,
• thing,
• tissue,
• resin,
• feldspar,
• object,
• rock,
• substance,
• gemstone,
• layer,
• particle,
• structure,
• glass,
• agent,
• part,
• cheese,
• stimulant,
• stuff,
• narcotic,
• abrasive,
• ground,
• sediment,
• pin,
• mineral,
• wood,
• crystal,
• work,
• deposit,
• formation,
• alloy,
• music,
• boot,
• aggregate,