What stand does an artist use to hold a canvas?

A progressive tax is one whose rate rises as what rises? What is a projecting support on a wall called, whether or not it's "flying"? A prolific warrior and builder, which pharaoh ruled Egypt for about 66 years in the 13th century B.C.? A promotional pianist for the piano maker Erard, which Hungarian wrote "A Faust Symphony" in 1857? A prosthesis is an artificial replacement for which kind of body part, such as an arm or leg? What protective coat does a scientist often wear? What is the protruding part of the face below the lips? What word describes a proud, stiff, pompous walk?