What is the difference between the assignment submission types “paper” and “no submission”?

Assignments, Canvas, Feedback & Assessment, Tips and Tricks

Functionally there is no difference between these assignment types, both create an Assignment (assignment details) and a column in the Gradebook (to enter grades and feedback), but no submission link for students. In the Canvas community “paper” is often used for assignment submissions external to Canvas and “no submission” for extra credit, however either can be used for assessments where online submission is not appropriate. See How do I add or edit details in an assignment? for further instructions.