Waterproof hunting pants and hunting bibs both aim to keep hunters dry, but they differ in coverage and purpose. Waterproof hunting pants cover from the waist to the ankles, focusing on keeping the lower body dry. Hunting bibs offer more extensive coverage, resembling overalls that extend up to the chest or shoulders, providing extra protection and warmth. The choice between the two typically hinges on the hunting environment, mobility needs, the desired level of coverage, and weather.