In my perspective, both are dependent on the luck.
Of the two betting is less risky because you can predict with the help of some criteria such as strength or weakness. But in gambling you must be dependent on luck.so betting is the safer of the two sides.
I don't think anything is safer in either gambling or betting because both are almost same. Even though you can predict more accurate results in sports or other betting but the end result still depends on your luck. Because there are many unknown things which we can't guess accurately. So I think both betting and gambling got same risks.