what makes it a loop vs. an out-n-back?

so the roommate and i are having a debate about the definition of what is a loop...please weigh in: i believe that both of thin strip with a dot in the center counts as a loop, but what the picture doesn't show is all he has done to make it a "loop" is cross the street. i believe that he has simply two out-n-backs and not a loop. what do you think?

i, at one point, had made a concession that he might be able to refer to his street cross as a "hairpin loop", but said concession has been revoked..