Modifiers matching cost:

• fixed,
• marginal,
• indirect,
• administrative,
• environmental,
• necessary,
• incidental,
• miscellaneous,
• variable,
• commercial,
• direct,
• significant,
• single,
• soft,
• routine,
• internal,
• overhead,
• immediate,
• additional,
• future,
• real,
• operational,
• major,
• hidden,
• actual,
• secondary,
• basic,
• reasonable,
• large,
• unusual,
• external,

Simple categories matching direct:

• action,
• area,
• expense,
• support,
• water,
• deformation,
• cause,
• value,
• measure,
• light,
• influence,
• regulation,
• control,
• instruction,
• response,
• practice,
• form,
• benefit,
• relationship,
• expenditure,
• behavior,
• teaching,
• instrument,
• payment,
• deposit,
• way,
• power,
• cost,
• activity,
• behaviour,
• connection,
• use,
• consumption,
• impact,
• disruption,
• evidence,
• marketing,
• input,
• reward,
• harm,
• capital,
• remuneration,
• interaction,
• complication,
• weather,
• source,
• route,
• injury,
• hazard,
• care,
• assistance,
• advantage,
• fuel,
• charge,
• force,
• threat,
• checkup,
• output,
• liabilities,
• labor,
• heat,
• means,
• subsidy,
• attack,
• elements,
• effect,
• incentive,
• selling,
• outlay,
• path,
• service,
• energy,
• event,
• aid,
• meeting,
• loading,
• measurement,
• body,
• interest,
• project,
• comparison,
• protest,
• treatment,
• opposition,
• process,
• trauma,