Modifiers matching mass:

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

Simple categories matching gravitational:

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