To answer your question about finding words, if you have a general category to begin with (as you do -- "information"), you can consult Roget's Thesaurus. See below for how it's organized. I recommend the print version, but there is also an online version. Online Roget's Thesaurus.
From Wikepedia entry:
Roget's Thesaurus is composed of six primary classes.[5] Each class is composed of multiple divisions and then sections. This may be conceptualized as a tree containing over a thousand branches for individual "meaning clusters" or semantically linked words. These words are not exactly synonyms, but can be viewed as colours or connotations of a meaning or as a spectrum of a concept. One of the most general words is chosen to typify the spectrum as its headword, which labels the whole group.