Modifiers matching affinity:

• elemental,
• low,
• chemical,
• strong,
• ecological,
• shared,
• residual,
• southern,
• cultural,
• topological,

Simple categories matching residual:

• structure,
• herbicide,
• organism,
• material,
• component,
• compound,
• contaminant,
• fuel,
• deposit,
• hydrocarbon,
• waste,
• reactant,
• contamination,
• gas,
• ion,
• pesticide,
• substance,
• oil,
• impurity,
• detritus,
• solid,
• fumigant,
• sediment,
• salt,
• solvent,
• volatile,
• soil,
• nutrient,
• disease,
• affinity,
• insecticide,
• fiber,
• mineral,
• product,
• chemical,
• bin,
• liquid,
• stress,
• toner,
• monomer,
• carbon,
• group,
• constituent,
• particle,
• film,
• metal,
• halogen,
• resin,
• flow,