The term "orthodiagram" is a relatively obscure term in the English language, and therefore has few synonyms. However, there are a few phrases that may be used to describe similar concepts. For example, a "graph" or "chart" may be used to visually display data or information in a manner similar to an orthodiagram. Additionally, the term "diagrammatic representation" may be used as a more broad term to describe any visual representation of information, including an orthodiagram. While there may not be many specific synonyms for the term "orthodiagram," understanding related concepts and terminology can help in effectively communicating information through visual aids.