Fear is a challenge because the person is not going to want to do it since they are scared. If you can overcome the fear then you have won that challenge.
The best way to face fear is to overcome that fear itself as a challenge. The more you avoid it the intenser the fear becomes.
Grendel responded with fear to the realization that Beowulf would challenge his fighting skills.
The Man and the Challenge - 1959 Man Without Fear 1-14 was released on: USA: 19 December 1959
Running in the New York City Marathon was a (challenge) that Nina felt ready to overcome.
It could be Kosmimaphobia which is a fear of jewels.
SHE HAD 2 CLIMB UP A LADDER INTO A HELICOPTER ABOVE WATER WHILE ROTATING. WATCH IT ON YOUTUBE (WWF FEAR FACTOR)
Grendel feels threatened by Beowulf's challenge and becomes anxious. He is filled with fear, as he knows Beowulf is a formidable opponent who poses a significant challenge to his fighting skills.
NO, it is not a challenge because it could happen.
You could find another fear to cure the fear of pain.
It could be Papyrophobia which is the fear of paper.
could fall under zoophobia, a fear of animals
The fear of edges? Not sure if there is one. Could you be referring to acrophobia (fear of heights)?