PURPOSE:To effectively support a human idea in naming of things. CONSTITUTION:A Japanese language analyzing part 2 connected to a terminal 1 is connected to a preserving part 3, a comparing part 4 and a presenting part 5 connected to a data base 6. In the data base 6, a nomenclature example of things is preserved in advance by using an expression for coupling a conception to a conception related thereto. Each nomenclature example is constituted of a preserving feature expression related to a feature of each thing and a preserving name expression related to a name of its thing. A user inputs an object feature expression related to the feature of the thing to be named from the terminal 1. The comparing part 4 retrieves such a similar example that the whole or a part of the object feature expression becomes a corresponding expression containing a conception in the preserving feature expression. The presenting part 5 replaces these key conceptions with the corresponding conception corresponding thereto in the corresponding expression, respectively. With respect to an inquiry sentence, the left side is replenished by an idea inputted by the user, and it becomes an object name expression.
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