6. The video apparatus of claim 5 , wherein the first content is broadcasting content.
5. A video apparatus comprising: a keyword extracting unit configured to extract one or more keywords in a first content currently played back; an image storage unit configured to store extracted keywords together with images corresponding to the extracted keywords; an image search unit configured to search for stored images from the image storage unit related to the extracted keywords received from the keyword extracting unit; a display unit configured to display a keyword list including the extracted keywords and images corresponding to the extracted keywords; a controller configured to display the keyword list on the display unit upon receiving a user input to select at least one keyword from the displayed keyword list; and an interface connected to an Internet protocol network, wherein the corresponding images are acquired from a second content which is different from the first content where the keywords are extracted, wherein, in response to determining that the interface is not connected to the network, the image search unit searches for visual items previously stored in the image storage unit instead of the images related to the keywords, and wherein, in response to determining that the images related to the keywords are not stored in the image storage unit, the image search unit determines whether the interface is connected to the network; and in response to determining that the interface is connected to the network, the image search unit searches for the images related to the keywords through the network.