The list of words included are the most frequently used 2265 words in Spoken English. The words were selected by analyzing more than 250,000 words from hundreds of conversations. The only words to make it into the list were those that were also found in the BNC top 3,000, The COCA 5,000, and the Longman 3,000.
Source:
http://www.talkenglish.com/
Translation:
https://translate.yandex.ru/