I they you Trump very great he China said me money going Mexico
Those are the top 13 words at Donald Trump's end of a vocabulary comparison with Jeb Bush. The top 13 words at Jeb Bush's end of the list are:
The state strategy government should create president American in growth of ISIS forces
I created lists of word counts from each candidate's announcement speech, debate remarks, and (their side of) some press conferences or interviews (two for Trump, three for Bush). The total was 14,746 words for Trump, 14,429 words for Bush.
For all the words in the combined lists, I calculated the "weighted log-odds-ratio, informative Dirichlet prior", using the algorithm described on p. 387-8 of Monroe, Colaresi & Quinn "Fightin' Words: : Lexical Feature Selection and Evaluation for Identifying the Content of Political Conflict", Political Analysis 2009. For some earlier uses of this method, see "Obama's favored and disfavored SOTU words", 1/29/2014; and "Male and female word usage", 8/7/2014.
This method tells us something about the candidates' characteristic word choices. But there are lots of interesting things about how politicians (and their speechwriters) talk and write that it doesn't tell us.
I'm about to board a plane for a journey that will end at Interspeech 2015, if all goes well; so it'll be a couple of days before I can tell you more.