example of different types of GSM Papers
The lightest type of paper, ranging from translucent tracing paper to newsprint.
You’ll find this weight of paper in sketchpads or notebooks. It’s thick enough to draw on with pencil, but heavy ink or marker may bleed through.
This thicker type of paper is stiffer but still bendable. You’ll see it used for some magazine covers and higher-quality flyers. This is also the weight of most paper used for watercolors or painting.
The highest GSM paper is pretty much cardstock. This is the stiffest, sturdiest paper and is used for business cards and invitations.