Wordstorm visualizes the associations between words.
Starting from a word that you choose, Wordstorm creates a map that places related words close together; words with a weaker association are mapped further apart. These word associations can help you find new ideas, inspiration in a brainstorm or getting over writers block. The visual presentation of the words makes the conceptual relationships clear in a glance.
Wordstorm is not a thesaurus.
Wordstorm is an inspiration tool. A thesaurus links words with similar meanings, this program links words whose underlying concepts are related. The words "leaf" and "tree", for example, are strongly related but do not have similar meaning. Wordstorm links these related words making it a great help in writing an essay and finding inspiration for a brainstorm.