If there are more than one terms that cover the same concept (equivalence relationship), one is selected as a preferred term. Preferred terms represents the concept by synonymous terms in an information retrieval system.

Preferred Terms

Equivalence Cross-Reference Conventions

A cross-reference that indicates a relationship between synonymous terms or terms that share similar definitions. These relationships are typically used to identify one term among synonyms to represent a single concept in an information retrieval system. 

San Jose State University

- Equivalence
- Hierarchical 
- Associative 

Cross-Reference Relationship Types

Hedden, H. (2010). The Accidental Taxonomist. Information Technology Inc.

The Accidental Taxonomist

Equivalence Cross-Referencing Relationships

A cross-reference that indicates a relationship between subordinate and superordinate terms. Subordinate terms are those that are members, parts, examples, or instances of a superordinate term.

Hierarchical Cross-Referencing Relationships

A cross-reference that indicates a relationship between terms that are related. An associative relationship is established to outline subject areas in a given domain and to aid users in browsing.

Learn Before

Related

Learn After