Modifiers matching mass:

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

Simple categories matching immovable:

• machine,
• property,
• object,
• impediment,
• equipment,
• assets,
• thing,
• surface,
• vehicle,
• article,
• form,
• part,
• structure,
• point,
• feature,
• facility,
• obstruction,
• item,
• mass,
• barrier,
• artefact,
• artifact,
• fixture,