What kind of finch do I have?

Ok I got two finches Im new to this because I never had finches before I know one of them is a gouldian finch.But I have an all grey finch with a little white line on each side of its face and its beek is very orange and so is its feets and it sounds the finch makes sounds like a car horn(lol).What kind of finch is it and how can you tell if its a male or female?