Modifiers matching earth:

• unstable,
• heavy,
• siliceous,
• red,
• rare,
• colloidal,
• soft,
• solid,
• under,
• alkaline,
• refractory,
• natural,
• absorbent,
• beautiful,
• flat,
• surrounding,
• greek,
• outside,
• fluid,
• light,
• impermeable,
• local,
• firm,
• hidden,
• magnetic,
• changing,
• moist,
• deep,
• common,
• packed,

Simple categories matching alkaline:

• gas,
• thing,
• material,
• substance,
• drug,
• fruit,
• food,
• sorbent,
• matter,
• waste,
• buffer,
• mineral,
• toiletry,
• fluoride,
• metal,
• vegetable,
• shampoo,
• byproduct,
• water,
• substrate,
• azide,
• oxide,
• chemical,
• liquor,
• earth,
• fluid,
• compound,
• filler,
• salt,
• activator,
• paper,
• stuff,
• secretion,
• system,
• surface,
• pool,
• atmosphere,
• dentifrice,
• hydroxide,
• mixture,
• particle,
• derivative,
• rock,
• formulation,
• contaminant,
• component,
• stone,
• medium,
• structure,
• condition,
• builder,
• contamination,
• ion,
• lake,
• composition,
• soil,
• agent,
• phosphate,
• fungicide,
• solution,
• residue,
• solvent,
• magma,
• caustic,
• enzyme,
• constituent,
• cleaner,
• deposit,
• atom,
• solid,