What are the differences between knowledge and Belief? How do these apply to claims about existence of objects?

To most, knowledge is what we 'know' through learning and general knowledge. But to sit down and explore the idea of knowledge and the idea of belief brings up some philosophical questions; what is knowledge? If it is what we have learnt, how do we know it is definite, if it is scientifically proven, then is it science that navigates and has the final say in what can be classed as 'knowledge?' Belief is …

…These explorations could go on forever, but having a limit, I have tried to look at the difference between knowledge and belief, and how these claims apply to the existence of objects, more briefly so in the latter. But the main question was a vast one compared to the second, as once the difference between the two is clarified, it is then with more ease one can explore the question of the existence of objects.