Different Directions of the Grain
The grains in a cloth run in 3 different directions: lengthwise grain, crosswise grain, and bias grain. As the name suggests, Lengthwise grain runs along the entire length of the cloth parallel to the selvage.
Crosswise grain crisscrosses its way through the lengthwise grain exactly perpendicular to it. The third type of grainline, i.e., the bias grain, crosses both the lengthwise