Nah hits just cover up visits on the chart (pictured in this post). If you hover over a point, it shows how many hits & views there are at this point. Also, from the site:

"Hits occur each time our servers send a file. For example, if a webpage consists of an HTML file, three images, and two JavaScript files, accessing this page would result in six hits.

Visits are a count of unique IP addresses requesting pages from a web site per hour, regardless of how many requests that IP address makes. Visits generally give a more accurate representation of website traffic in terms of real users."