Modifiers matching hardwood:

• native,
• solid,
• softer,
• ornamental,
• central,
• heavy,
• deciduous,
• regular,
• british,
• exotic,
• superior,
• dense,
• mature,
• temperate,
• tropical,
• aromatic,
• lighter,
• larger,
• coloured,
• foreign,
• rich,
• european,
• domestic,
• dry,
• hard,
• irish,
• suitable,
• english,
• durable,
• old,
• fine,
• raw,
• new,
• beautiful,
• oily,
• southern,
• common,
• traditional,
• unfinished,
• colored,
• alternative,
• small,
• dried,
• flexible,
• unwanted,
• smooth,
• dark,
• stained,
• warm,
• robust,
• valuable,
• manufactured,
• unusual,
• young,
• classical,
• mixed,
• local,
• unique,
• northern,
• tough,
• sustainable,
• expensive,
• important,
• appalachian,
• porous,
• real,
• healthy,
• resinous,
• soft,
• african,
• heavier,
• commercial,
• trim,
• varnished,
• clear,
• precious,
• american,
• grown,
• asian,
• popular,
• white,
• good,
• indigenous,
• costly,
• rare,
• dead,
• nice,
• scottish,
• tall,
• seasoned,
• noble,
• hardy,
• strong,
• darker,
• natural,
• light,
• attractive,
• available,
• riparian,

Simple categories matching costly:

• penalty,
• addition,
• trait,
• material,
• gem,
• cheese,
• metal,
• item,
• merchandise,
• drug,
• insurance,
• work,
• part,
• study,
• equipment,
• filler,
• constituent,
• mechanism,
• control,
• stuff,
• resource,
• complication,
• behavior,
• gizmo,
• ceremony,
• change,
• fuel,
• activity,
• halogen,
• facility,
• intervention,
• possession,
• illness,
• disease,
• product,
• surprise,
• behaviour,
• treatment,
• compound,
• stone,
• works,
• instrument,
• undertaking,
• action,
• fitting,
• food,
• benefit,
• failure,
• system,
• business,
• wood,
• thing,
• project,
• testing,
• macromolecule,
• machine,
• hardware,
• institution,
• substance,
• beverage,
• use,
• practitioner,
• care,
• service,
• chemical,
• technician,
• placement,
• liquid,
• event,
• accommodation,
• tissue,
• article,
• pet,
• fabric,
• signal,
• process,
• setting,
• preparation,
• animal,
• element,
• mineral,
• addiction,
• sensor,
• hardwood,
• measure,
• crime,
• component,
• innovation,
• modality,
• insecticide,
• repair,
• extra,
• procedure,
• ingredient,
• spice,
• structure,
• object,
• option,
• vehicle,
• assets,
• disorder,
• medium,
• area,
• infection,
• connection,
• occurrence,
• test,
• condition,
• investigation,
• textile,