Fill in the Blanks Apply knowledge graph terms in conversationOnline version Knowledge graph terms form the building blocks and foundational concepts used to construct graphs and understand their structure. by Maru C Willson Celis Learning Architects 1 edges graph nodes A is a data structure consisting of and that connect them representing various relationships and structures . 2 degrees paths For directed graphs , the number of incoming edges and outgoing edges is called . Connections from one node to another graph are called . 3 undirected directed A graph representing dependencies , causality , or hierarchies is called while a graph where edges do not is called . 4 ontologies domain rules structure A formal representation of a set of concepts and their relationships within a . In knowledge graphs , define the and for relationships . 5 Schemas predefined properties A structure that describes the types of nodes , edges , and in a graph . define the framework for building structured graphs . 6 standard triples semantic A for representing data in graphs , commonly used in knowledge graphs . RDF uses ( subject - predicate - object ) to define relationships between entities . 7 reasoning ontologies structures OWL relationships A language for defining and in semantic knowledge graphs . is used to create complex and support .