The following is broken down by type of words. All the words in the following lists are in the list of 2000 words. The sum is greater than 2,000 because many words can be both a noun and a verb.
Finally, before you start studying vocabulary, keep in mind that you will need to learn a lot more than 2,000 words. However, studying the right 2,000 words in the proper depth will help you to become fluent in English much faster.