Frypans and skillets have different shapes and intended uses, but both are incredibly versatile. It all comes down to the kind of versatility you want.
Saute pans have higher sidewalls than frying pans, which makes them better suited for cooking foods in more liquids without the risk of the liquids spilling over. A frying pan is ideal for shallow frying meats and vegetables with very little liquid. Despite its name, many chefs prefer sauteing foods in a frying pan over a saute pan because its sloped sides make it easier to toss foods.