PURPOSE. The purpose of this article was to define and describe the fundamental aspects of similarity with application to the use of nursing terminologies.
DATA SOURCES. Data were obtained from Google, Cumulative Index to Nursing and Allied Health Literature (CINAHL), PsychINFO, and PubMed using the keywords “similarity views,”“similarity,”“concepts and categorization,” and other published sources.
DATA SYNTHESIS. Three prominent similarity views were compared, contrasted, and applied to the use of nursing diagnoses.
CONCLUSIONS. Each view has intentions (requirements) that guide the categorization of information to concepts and influence naming of nursing concepts.
IMPLICATIONS. By understanding similarity, nurse educators and technology designers can influence how nursing concepts are represented.