Modifiers matching mass:

• smaller,
• large,
• compact,
• atomic,
• solid,
• big,
• molten,
• larger,
• decorative,
• gravitational,
• heavy,
• solar,
• stellar,
• diocesan,
• special,
• hot,
• huge,
• architectural,
• nonlinear,
• porous,
• plastic,
• nearby,
• moving,
• high,
• significant,
• metal,
• gaseous,
• external,
• immovable,

Simple categories matching gravitational:

• field,
• object,
• mass,
• distortion,
• body,
• flow,
• system,
• force,
• entity,