1. A server apparatus, comprising: a communicator configured to receive a text which corresponds to a voice signal; and a controller configured to, in response to a keyword, which corresponds to the text, not existing from among at least one keyword included in a mapping table, search for content information belonging to a content genre mapped with a synonym of the text, provide a search result to a display apparatus through the communicator, and update the mapping table by adding the synonym as the keyword, wherein the mapping table is a table in which the at least one keyword, at least one content genre, and at least one priority score in combination are mapped, and wherein the controller, in response to a plurality of content genres being mapped with respect to the synonym, selects at least one content genre according to a priority determined with respect to the plurality of content genres, and searches for content information belonging to the selected at least one content genre.
1. A server apparatus, comprising: a communicator configured to receive a text which corresponds to a voice signal; and a controller configured to, in response to a keyword, which corresponds to the text, not existing from among at least one keyword included in a mapping table, search for content information belonging to a content genre mapped with a synonym of the text, provide a search result to a display apparatus through the communicator, and update the mapping table by adding the synonym as the keyword, wherein the mapping table is a table in which the at least one keyword, at least one content genre, and at least one priority score in combination are mapped, and wherein the controller, in response to a plurality of content genres being mapped with respect to the synonym, selects at least one content genre according to a priority determined with respect to the plurality of content genres, and searches for content information belonging to the selected at least one content genre. 6. The apparatus as claimed in claim 1 , wherein the voice signal is input at the display apparatus.