RDFS, or RDF Schema, is a vocabulary for describing properties and classes of RDF resources. There are several synonyms for RDFS, including RDF+Schema, RDF-S, and RDF Vocabulary Description Language (RDFV). These interchangeable terms refer to the same technical specification used to model and manage RDF data. RDFS enables developers to create ontologies, which are conceptual models for data that describe relationships between entities. These ontologies can then be used to make data more discoverable and usable by both machines and humans. By using RDFS, developers and organizations can better structure and manage their data, leading to improved efficiencies and more effective decision-making.