The discovery of metal has been one the most decisive changes in the human history. Since that time, man has had the power to create powerful tools, structures and machines that would forever change the face of the earth. The tools for forming and manipulating metal have also advanced over the ages.
The modern society now depends on metal for everyday life, be it in the form of automobiles or the kitchen knife, metal is everywhere. This has made metal so important that the work of metal forming is also becoming quite popular.
Of the various types of metal forming, Roll forming is one very useful method. Do note here that the single word 'rollform' has the same meaning as the two separate words 'roll form'. So these two words are used interchangeably. Here's some more info: