14. A memory device of claim 13 , the first word and the second word frequency further comprises a frequency of synonyms of the first word and the second word, respectively.
13. A memory device having instructions stored which, when executed on a computing device, cause the computing device to perform operations comprising: determining pairs of words, where each pair of words in the pairs of words comprises a first word and a second word, with both the first word and the second word occurring together in more than one text document of a plurality of text documents; determining, for the each pair of words in the pairs of words: a first word frequency based on appearances of the first word in the plurality of text-documents; a second word frequency based on appearances of the second word in the plurality of text-documents; and a co-occurrence frequency based on appearances of both the first word and the second word together in the plurality of documents; receiving, from a user, an input indicating a maximum number of edges and a maximum number of nodes to include in a graphic presentation; displaying, on a first tab, a statistical view portion of the graphical presentation, the statistical view comprising the first word frequency, the second word frequency, and the co-occurrence frequency; and displaying, on a second tab, an interactive view portion of the graphical presentation, the interactive view portion comprising the first word and the second word each having a color, a size, font, boldness, slant, and a thickness determined based on the first word frequency and the second word frequency, respectively, while edges connect the first word and the second word, the edges having the associated color and the thickness determined based on the co-occurrence frequency of the each pair of words.