Yarn

A product of substantial length and relatively small cross-section consisting of fibers and filaments with or without twist.

Assemblies of fibers or filaments are usually given other names during the stages that lead to the production of yarn, e.g, tow, slubbing, sliver or roving. Except in the case of continuous filament or tape yarns, any tensile strength possessed by assemblies at these stages is generally the minimum that can hold them together during processing.

Yarn

Yarn is a long continuous length of interlocked fibers, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery, and rope making.The thread is a type of yarn intended for sewing by hand or machine. Modern manufactured sewing threads may be finished with wax or other lubricants to withstand the stresses involved in sewing. Embroidery threads are yarns specifically designed for hand or machine embroidery.

Yarn can be made from a number of natural or synthetic fibers. Many types of yarn are made differently though. There are two main types of yarn: spun and filament.

Source

Textile Terms and Definitions, 11th Edition, M J Denton & P N Daniels

https://en.wikipedia.org

http://www.textileschool.com

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