Modifiers matching byproduct:

• solid,
• inedible,
• metallic,
• organic,
• animal,
• useful,
• new,
• industrial,
• unwanted,
• prepared,
• agricultural,
• local,
• minor,
• marketable,
• alkaline,

Simple categories matching marketable:

• package,
• security,
• property,
• commodity,
• byproduct,
• material,
• resource,
• capital,
• output,
• assets,
• product,
• component,
• metal,
• obligation,
• legume,
• voucher,
• skill,
• instrument,
• training,