1. A method for providing keywords of a video apparatus, the method comprising: separating, by a processor, metadata from a first content; extracting, from the separated metadata, one or more keywords in the first content; displaying a keyword list including the extracted keywords and images corresponding to the extracted keywords; receiving a user input to select at least one keyword from the displayed keyword list; determining whether the images related to the keywords have been stored previously; determining whether there is a connection to a network; and generating, in response to determining that there is no connection to the network and that the images related to the keywords have not been stored previously, the keyword list using the keywords and using visual items previously stored instead of the images related to the keywords and searching for the images related to the keywords through the network, wherein the generating of the keyword list further comprises generating the keyword list using the keywords and the images found during the search, and wherein the corresponding images are acquired from a second content which is different from the first content where the keywords are extracted.