Given the Wikipedia's list of profanities, you will see that it's somehow detached from the rest of curse words. The most commonly recognized profanities usually describe a body part, person or an (usually inappropriate) act. However, 'hell' is the only one that actually bears the negative connotation as a result of its origin - which is strictly of religious background.
Why is it then, that while still being considered inappropriate to use, you can hear it on the radio, tv and in other media without being censored or blacked-out?
Is there any source in form of a dictionary that could point out the severity of the word's usage, or some kind of category that would help in categorizing, and perhaps distinguishing it from the other, way more vulgar, curse words?