11. A system for supporting a creation of a dictionary for a translation system which translates a first language into a second language, comprising: means for entering a first language document and a corresponding second language document; means for extracting each first language character string to be registered in the dictionary from the first language document entered by the entering means; means for selectively extracting each corresponding second language character string with respect to each first language character string from the corresponding second language document according to a level of correspondence between a section of the first language document from which each first language character string is extracted and a section of the corresponding second language document to which each corresponding second language character string belongs, by morphologically and syntactically analyzing the first language document and the second language document; and means for selectively outputting each first language character string extracted by the extracting means along with each corresponding second language character string extracted by the selectively extracting means as a candidate for a registration knowledge to be registered in the dictionary according to the level of correspondence.
12. The system of claim 11, further comprising means for specifying a type of each first language character string to be extracted by the extracting means such that the extracting means extracts only the first language character string of the specified type.