Cook: (noun) a person who cooks.
Chef: (noun) the chief cook, especially in a restaurant or hotel, usually responsible for planning menus, ordering foodstuffs, overseeing food preparation, and supervising the kitchen staff.
While the definitions seem very similar, note according to Kelly Bethenny Frankel is the former, and not the later.Cook: (noun) a person who cooks.
Chef: (noun) the chief cook, especially in a restaurant or hotel, usually responsible for planning menus, ordering foodstuffs, overseeing food preparation, and supervising the kitchen staff.
While the definitions seem very similar, note according to Kelly Bethenny Frankel is the former, and not the later.