This standard defines a core ontology that allows for the representation of, reasoning about, and communication of knowledge in the robotics and automation (R&A) domain. This ontology includes generic concepts as well as their definitions, attributes, constraints, and relationships. These terms can be specialized to capture the detailed semantics for concepts in robotics sub-domains. This standard contains the Core Ontology for Robotics and Automation (CORA) with the representation of fundamental concepts from which the more detailed concepts belonging to other Ontologies for Robotics and Automation Working Group (ORA WG) ontologies are constructed. This standard also defines the ontology engineering methodology used to construct the ORA ontologies.