Bubble lines - This is a tool for each selected word represented as a bubble with the size of the bubble indicating the word’s frequency. It is useful in figuring out what the main point of any story or article would be.
Bubbles - This is another tool to list high frequency words in a different visualization way. This tool is also useful in figuring out what the main point of any story or article would be but it is easier to look at than bubble lines. It makes it easier to see which word occurs the most in any story or article.
(Source: https://voyant-tools.org/docs/#!/guide/start)
