What do Paul Bunyan and Pecos Bill have in common?

Probably the first thing one would notice is that while Bill was a regular-sized person, Paul was a giant.

Of course, neither person was real; they were characters in tall tales, Paul for the timber industry, Bill for the cowboys. There were other characters for other trades and localities: Febold Feboldson for farmers, Joe Magerac for steelworkers, A.B. Stormalong for sailors, Mose the Bowery Bhoy for firemen...