1. A document classification and analysis system, comprising: a processor; a memory including two or more storage regions; and a non-transitory computer-readable medium having stored thereon instructions that, when executed, cause the processor to perform a method, the method comprising: receiving a document including a plurality of words; performing morpheme analysis on the document to extract original forms of the words; tagging each of the words based on a corresponding part-of-speech; determining location information of each of the words based on an order of the words in the document; applying two or more different types of word lists to the words in the document to classify each of the words; and storing the location information, wherein the location information of each of the words is stored in at least one of the two or more storage regions in the memory based on the classification of the words, the two or more storage regions storing the two or more different types of word lists in the form of tables, respectively, and wherein the two or more different types of word lists are used in combination to apply a query rule to the document.