Term: catastrophe: a sudden violent change in the earth's surface
Broader: physical entity: an entity that has physical existence | Unrelated: bud brush: a perennial that is valuable as sheep forage in the United States
Broader: physical entity: an entity that has physical existence | Unrelated: hackney: a carriage for hire
Broader: physical entity: an entity that has physical existence | Unrelated: phragmites: reeds of marshes and riversides in tropical or temperate regions
Broader: physical entity: an entity that has physical existence | Unrelated: magnetic line of force: a line of force in a magnetic field
Broader: physical entity: an entity that has physical existence | Unrelated: motacilla: type genus of the Motacillidae: wagtails
Broader: physical entity: an entity that has physical existence | Unrelated: squeaker: any artifact that makes a squeaking sound when used
Broader: physical entity: an entity that has physical existence | Unrelated: reproach: disgrace or shame
Broader: physical entity: an entity that has physical existence | Unrelated: air horn: a pneumatic horn
Broader: physical entity: an entity that has physical existence | Unrelated: social organization: the people in a society considered as a system organized by a characteristic pattern of relationships
Broader: physical entity: an entity that has physical existence | Unrelated: clothes dryer: a dryer that dries clothes wet from washing