Modifiers matching reward:

• lower,
• psychological,
• special,
• financial,
• tangible,
• additional,
• everyday,
• social,
• positive,
• annual,
• extrinsic,
• out,
• individual,
• offer,
• external,
• exciting,
• organizational,
• traditional,
• monetary,
• institutional,
• smaller,
• indirect,
• common,
• personal,
• internal,
• valuable,
• variable,
• immediate,
• motivational,
• emotional,
• complimentary,
• promotional,
• complex,
• practical,
• visible,
• economic,
• fluctuating,
• primary,
• intrinsic,
• direct,

Simple categories matching annual:

• charge,
• project,
• grass,
• plant,
• contest,
• event,
• bonus,
• fiber,
• flower,
• ceremony,
• collection,
• expense,
• weed,
• process,
• herb,
• grain,
• wildflower,
• vegetable,
• activity,
• occurrence,
• lake,
• work,
• income,
• festival,
• fruit,
• weeds,
• brome,
• maintenance,
• reward,
• legume,
• invoice,
• fee,
• vine,
• show,
• seed,
• payment,
• system,
• host,
• crop,
• publication,
• fixture,
• climber,
• endeavor,
• celebration,
• effort,
• species,
• fibre,
• festivity,
• pulse,
• seedling,
• forage,
• theme,
• preparation,
• social,
• incentive,
• clover,
• holiday,
• cereal,