It can be accessed under the Smile ElasticSuite menu, via the Thesaurus entry.

Parameter	Description
Name	Thesaurus name
Type	Synonym or Expansion
Terms	Terms that are used in the thesaurus. - For Synonyms : Terms that are considered as synonym are listed and separated by comas. - For expansions : First Reference term is displayed following by => and expansion terms separated by a comas
Store	Scope of the thesaurus (storeview level)
Status	The thesaurus is active or not
Action	Edit : redirect to the thesaurus edition page </br> Delete : delete the thesaurus