Data is compiled from the "New American Roget’s College Thesaurus in Dictionary Form - Third Revised Edition."
This was of personal interest to me. Curious after making and taking several "commonest word" quizzes, I wondered what the most common words in a dictionary would be. I couldn't find a useable electronic form of a printed dictionary, but did find this thesaurus in dictionary form and, after seeing the intriguing results (with the exception of some very strange ones), I think the distribution of words might compare to other standard dictionaries and thesauruses (is that a word? Thesauri? Theusaurusesesses? Wordy books?).