It is desighn to overcme any obsticles it confronts. This objecty will observe Mars by takeing photographs of the surface and any other unusual sights of Mars. But their main focus is to see if theres any life in Mars. So this is an example of discovery. I guess freedom and liberty mean pritty much the same.
Liberties are freedoms from tyranny or foreighn dominations.
I also think liberty is a political independence. Which means every person is endependent and free to do what they want. I think this is the base from where all the rights come from. For example freedom of speech which I think it's the most important right, because without this right you would'nt be able to tell people whats right and wrong.