Friction spinning is a spinning system in which the yarn receives its twist by being rolled along the longitudinal axis in the nip between two revolving surfaces.
S-Twist Yarn is a left-handed twisted yarn. See Z-Twist.
Singles yarn is the most simple strand of textile material suitable for operations such as weaving and knitting. A singles yarn formed from fibres with more or less twist; from filaments with or without the twist.
Warp is a term used to describe the lengthwise, vertical yarns carried over and under the weft.
Z-Twist is a term used to describe a right-handed twisted yarn, in contrast to S-Twist.