Watson 349 is, as you say,
Hydrocodone w/Acetaminophen(ie- Vicodin,
Lortab), is an anti-inflammatory and pain killer that's prescribed (due to it's addictive tendancies) for moderate to sever pain.
Watson 791 is
Naproxen,,(ie-
Aleve), also an anti-inflammatory as well as a pain killer and is used for light to moderate pain.