The meaning group to which a lexeme belongs; a group of interrelated vocabulary items. For example, the terms 'head', 'arm' and 'foot' all belong to the semantic field 'parts of the body.'

Words that are 'in the same semantic field' are related to each other in terms of their meaning: e.g. fish / catch / gut / river / slimy / green umbrella.

a conceptual or cultural domain that revolves around some common feature of meaning

a set of logical units which are supposed to share an underlying structural organization