Books by Mark (Brigham Young University Davies

Offers a tool for learners of American English, providing a list of the 5,000 most frequently used words in the language.

Suitable for learners of Portuguese, this dictionary provides a list of the 5000 most commonly used words in the language. Based on a 20 million word collection of Portuguese (taken from both Portuguese and Brazilian sources), which includes both written and spoken material, it provides detailed information for each of the 5000 entries.