semantic field

This term is primarily used in linguistics and semiotics to describe the conceptual grouping of lexemes. It describes how a specific domain of experience is partitioned into a network of related terms, allowing analysts to map the boundaries of a topic's vocabulary.

In academic writing, it is often contrasted with a "lexical field," though the two are frequently used interchangeably. While a lexical field focuses on the set of words that share a common component of meaning, a semantic field emphasizes the broader conceptual area and the relationships between those words.