Cookies can also be used by third parties to track you across sites. Search history includes items you've entered into the search field on the New Tab page or into Firefox's Search bar. Download history is the list of files you've downloaded that are shown in the Downloads window.
Browsing & Download History: Browsing history is the list of sites you've visited that are shown in the History menu, the Library window's History list and the address bar autocomplete list.5 Remove a single website from your history.4 Clear cookies and data for a specific website.3 How do I make Firefox clear my history automatically?.1 What things are included in my history?.