The associative relationship is a relationship between two concepts which do not belong to the same hierarchical structure, although they have semantic or contextual similarities. The relationship must be made explicit because it suggests to the indexer the use of other indexing terms with connected or similar meanings which could be used for indexing or searches.
The associative relationship is shown by the abbreviation RT (related term), placed between two associated concepts and is reciprocal:
RT financial solvency
There is no associative relationship between concepts with the same top term.
There is no associative relationship between gaming and sport, which are subordinate to the same top term leisure in MT 2826.