Synonyms
Synonyms are an extension of the content filter's Keyword list and can be used to broaden the reach of a keyword to include conceptually related topics. Synonym suggestions for a given word or phrase must be added to the Include list to be considered by the content filter.
Global property settings for both Case sensitive comparisons (enabled on the Content Filter/Set Global options page) and Exact Match are also applied to synonyms.
See also:
Enabling synonym checking
Example
Creating A Keyword List: Example