Modifiers matching gum:

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

Simple categories matching thickening:

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