Systematic Nomenclature: A set of rules and guidelines used to name chemical compounds in a logical and consistent manner, typically based on the compound's structure and composition.
Trivial Nomenclature: The use of common or traditional names for certain chemical compounds, often based on their source, appearance, or historical usage, rather than their systematic names.
IUPAC:The International Union of Pure and Applied Chemistry, the organization responsible for establishing and maintaining the rules and guidelines for systematic chemical nomenclature.