Hello Nomenclature is the term or terms applied to someone or something while terminology means the body of terms used with a particular technical application in a subject of study, profession, etc.

Hello, here is an answer to your question: Terminology: a set of terms used in a particular field. nomenclature: a system of generating new terms for a particular field. Terminology is a subset of vocabulary and, therefore, is part of the language. Nomenclature is a set of external rules. Hope that helps ☺️