This text discusses the concept of semantic fields and lexical fields in structural semantics. It explores how words are grouped together based on a common semantic component to form semantic fields, using the example of the semantic field of time. The text also delves into the work of Jost Trier and his school in developing the concept of lexical fields, which are highly organized and integrated conceptual spheres. It explains how the significance of each unit in a semantic field is determined by its neighbors, and how semantically related words must occur near each other in text.