Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
vocabulary
The vocabulary of a person is efined either as the set of all words that are understood by that person or the set of all words likely to be used by that person when constructing new sentences.
Trivia about vocabulary
It's the words of a language; we'll see how good yours is now
The stock of words used by a particular people; let's see how extensive yours is