# Welcome to the Thesaurus Documentation!
The 4App Thesaurus allows system administrators to create and manage dictionaries in the admin area.
An active thesaurus optimizes search operations and leads to results more quickly: It considers synonyms, misspellings and related child elements when a search is performed on its assigned fields. Thus, a thesaurus enables a user to find all bikes when searching for "bike", including objects tagged "pedelec", "e-bike" or "mountain bike".
Without a thesaurus, a user must always know a name or keyword, because a search term must be exact to find the right result (a search for "bike" will find no e-bike).
Admins can create multiple synonym trees for different needs. They can as well import or export thesauri contents.
After installation, new Thesaurus admin snap-in for configuration is available:
# Supported Core Engine Version
The 4App Thesaurus is supported starting from Core Engine version 3.10.7 or higher.