A method for creating and using a cross-idea association database that includes a method for associating words and word strings in a language by analyzing word formations around a word or word string to identify other words or word strings that are equivalents or near equivalents semantically. One method for associating words and word strings includes querying a collection of documents with a user-supplied word or word string, determining a user-defined amount of words or word strings to the left and right of the query string, determining the frequency of occurrence of words or word strings located on the left and right of the query string, and ranking the located words.