11. The information processing method according to claim 8 , wherein said keyword data associates one of said plurality of keywords with a plurality of partial character inputs, and in said step of retrieving one of said plurality of keywords, when all of said plurality of partial character inputs are received, the one of said plurality of keywords corresponding to said plurality of partial character inputs is retrieved.
8. An information processing method to be performed by an information processing device including a memory unit storing data, comprising the step of receiving a character input representing one of a plurality of expressions of a keyword, wherein said data contains a plurality of stored keywords, a plurality of contents, each being stored in association with at least one of said plurality of stored keywords, and keyword data indicating each keyword of said plurality of stored keywords as being associated with a plurality of potential character inputs corresponding semantically to the keyword but differing in expression, said information processing method further comprising the steps of: retrieving, from among said plurality of stored keywords based on said keyword data, a keyword stored in association with the plurality of potential character inputs which plurality includes the character input that was received; and outputting one of said plurality of contents corresponding to the retrieved keyword.