Modifiers matching gum:

• commercial,
• synthetic,
• organic,
• herbal,
• natural,
• common,
• animal,
• edible,
• thickening,
• soluble,

Simple categories matching thickening:

• agent,
• food,
• gum,
• mixture,
• ingredient,
• starches,
• starch,
• sauce,
• material,