Originally Posted by patrickBOOTH
Poplin is cotton. It is just the weave that makes it "poplin".
Poplin = Broadcloth = Plain weave. All 3 are equivalent nowadays and can be found in any type of material (coton, silk, linen, wool ect)
Twill is a type of weave that has a diagonal appearance to it. It can also be found in any type of material (coton, silk, linen, wool ect)
Poplin and twill weaves are both popular...