1. Cord
The cord used in rock climbing is static. The diameter of the cord varies from 2 to 7 mm.
Cord - 6 to 7 mm
Cords are used to making autoblocking knots (Prussik or Machard/Klemheist knots), or link anchor points together (belay stance)
Cord - 2 to 5 mm
Cords in smaller diameters are often used for accessorisation