9. The glossary management device according to claim 2 , wherein the analysis circuit determines whether or not the language of the document is Japanese and extracts one or more text segments that are composed only of alphabetic characters from the document if the language of the document is Japanese.
2. The glossary management device according to claim 1 , wherein the acquisition circuit receives a user input designating an internal-external classification of the document, and determines that the document is an internal document and acquires text data of the document if the internal-external classification indicates that the document is classified as an internal document.