What is the difference between Hamburger icon and Ellipsis icon?

I'm working on an enterprise application with a possible responsive design in future. What is the difference between the hamburger icon (3 horizontal bars) and the Ellipsis (3 horizontal / vertical dots)? Can a screen have both the icons together - once being primary navigation and the other being a secondary actions button (could be additional information or actions etc)?

Any insights would be very helpful!

Thanks!