With the keyword density analysis module, you can easily see which words are used in your text and what their number of occurrences and relative density is. The analysis looks at keyword phrases existing of 1, 2, 3, 4 and 5 words. Common (stop)words are filtered. So you will only see words that actually matter.
You will find the keyword density analysis on the Editor page, under Tools, tab Density.
This feature is available in all paid accounts.