A custom thesaurus import file is a CSV (comma-separated values) file that contains terms and synonyms. Each line of the file contains one term and the corresponding synonyms, separated by commas. For example, if the thesaurus term is car and the synonyms are truck, automobile, and vehicle then the line in the import CSV file is:
car, truck, automobile, vehicle
The first words on each line are the thesaurus terms, and the words that follow each term on that line are the corresponding synonyms.
Tip:
To add terms to the custom thesaurus individually, see Adding Terms to the Custom Thesaurus.
To import a custom thesaurus to Full-Text Search: