This is a pattern for four different cowls, and one scarf. All use the same graph and main pattern. The differences are in the gauge, yarn choice, needle selection.
Basically:

Maureen - A scarf in Brocade Yarn, Worsted Weight with size 8 needles
Morris - Two finer gauge cowls in Chime Sport with size 4 needles - the differences are in the button loops v. buttonholes.
Maxine - A super chunky cowl in one (1) eight-ounce skein of Yarn Hollow Burly with button loops
Maurice - A Maxi Cowl with three 8-ounce skeins on Yarn Hollow Burly. It makes a dramatic and elegant cowl that can be worn in a multitude of ways, with or without buttonholes.