Modifiers matching ground:

• difficult,
• weak,
• neutral,
• soft,
• bad,
• shiny,
• rough,
• high,
• artificial,
• higher,
• durable,
• firm,
• softer,
• hard,
• vertical,
• familiar,
• moist,
• metal,
• flat,
• rocky,
• paved,
• level,
• stable,
• sacred,
• dangerous,
• open,
• unsecured,
• disturbed,
• grown,
• low,
• undisturbed,
• up,
• elevated,
• metallic,
• holy,
• slippery,
• private,
• woven,
• loose,
• permeable,
• waterlogged,
• dry,
• new,
• coarse,
• unstable,
• rigid,
• harder,
• uneven,
• under,
• uncultivated,
• safe,
• common,
• routine,
• working,
• heavy,
• clean,
• porous,
• sensitive,
• sized,
• old,
• irregular,
• sandy,
• hazardous,
• technical,
• mechanical,
• wet,
• good,
• off,
• natural,
• convenient,
• barren,
• particular,
• white,
• conductive,
• electrical,
• over,
• clear,

Simple categories matching off:

• nature,
• point,
• surface,
• object,
• opening,
• characteristic,
• item,
• track,
• appliance,
• equipment,
• brand,
• structure,
• accessory,
• installation,
• residue,
• season,
• system,
• dirt,
• hours,
• road,
• scent,
• energy,
• indicator,
• insect,
• shop,
• predator,
• industry,
• animal,
• bird,
• day,
• thing,
• liquid,
• activity,
• area,
• clothing,
• container,
• craft,
• room,
• service,
• sweetener,
• trail,
• contaminant,
• piece,
• solute,
• gas,
• wall,
• bottle,
• actuator,
• lock,
• device,
• peripheral,
• line,
• night,
• heat,
• signal,
• food,
• material,
• move,
• treasure,
• fluid,
• particle,
• feature,
• waste,
• filter,
• month,
• measure,
• perch,
• source,
• chemical,
• protein,
• molecule,
• roads,
• fuel,
• furniture,
• stain,
• radiation,
• period,
• land,
• light,
• impurity,
• weapon,
• street,
• furnishing,
• machine,
• firework,
• property,
• ground,
• product,
• apparel,
• times,
• part,
• ability,
• control,
• instrument,
• event,
• contamination,
• menu,
• project,
• substance,
• web,
• reactant,