Question: Is there a difference between a bill and a beak?
Answer: Yes. A bill is used for catching things. Wading birds catch fish with their bills, cardinals "catch" seeds and berries with their bills, and flycatchers catch insects with their bills.
A beak is used for tearing things apart. Hawks and owls catch with their talons and tear the prey apart with their beaks, and vultures tear apart carrion with their beaks.
Left: a Yellow-crowned Night Heron catches a Crayfish with its bill and tosses the prey to orient it for swallowing.
Right: a Red-shouldered Hawk holds a Black Racer in its talons and tears it apart with its beak to get pieces small enough to swallow.