Superstructures can be substituted with several synonyms that carry the same meaning. Some of the popular synonyms include infrastructure, framework, edifice, system, organization, and composition. Infrastructure refers to the underlying structure that supports a larger system, whereas a framework is a skeletal structure designed to support a complex structure. Edifice is used to refer to a monumental building or structure, while a system refers to a set of interconnected components working together towards a common goal. Composition refers to the arrangement of parts to form a whole. All these synonyms can, therefore, be used interchangeably with the word superstructures to convey the same meaning.