Different Types of Yarn - Knotty Threadz % %

What are the 3 major yarn categories?

Animal fiber-based yarns. These yarns are sourced directly from domesticated animals and include yarn types such as Cashmere, Angora, Merino wool, and silk.
Plant fiber-based yarns. These originate from plants and consist of cotton, bamboo, and hemp.
Synthetic fibers yarns.

Structure

Spun yarn is made by twisting staple fibres together to make a cohesive thread, or single. Twisting fibres into yarn in the process called spinning and yarn spinning was one of the very first processes to be industrialized. Spun yarns may contain a single type of fibre, or be a blend of various types. Combining synthetic fibres (which can have high strength, lustre, and fire retardant qualities) with natural fibres (which have good water absorbency and skin comforting qualities) is very common. The most widely used blends are cotton-polyester and wool-acrylic fibre blends. Blends of different natural fibres are common too, especially with more expensive fibres such as alpaca, angora and cashmere.

Filament yarn consists of filament fibres (very long continuous fibres) either twisted together or only grouped together. Thicker monofilaments are typically used for industrial purposes rather than fabric production or decoration. Silk is a natural filament, and synthetic filament yarns are used to produce silk-like effects.

Texturized yarns are made by a process of air texturizing filament yarns (sometimes referred to as taslanizing), which combines multiple filament yarns into a yarn with some of the characteristics of spun yarns. Slub Effect means a yarn with thick and thin sections alternating regularly or irregularly.