What is the term for specialized words used within a specific field such as science or business?

The term that best describes specialized words used within a specific field, such as science or business, is terminology. In various professional domains, terminology encompasses the set of terms and expressions that are used to communicate specific concepts accurately and efficiently. It is essential in ensuring that experts can convey complex ideas without ambiguity, thus maintaining clarity within the field.

While vocabulary refers to a collection of words, it does not necessarily imply that these words are specialized or restricted to a particular field. Jargon is often associated with slang or informal language that may not always adhere to scholarly or standardized definitions, and it can sometimes be considered exclusionary to those outside the field. Lexicon refers to the complete set of words and phrases, not limited to technical or specialized contexts.

In contrast, terminology specifically focuses on the precise expressions required for effective communication among practitioners in a given discipline, making it the most accurate choice in this context.