After size, fibre length is the essential property of fibre. Fibre length is critical in the processing of fibres and yarns and the translation of threads strength to yarn strength.
FILAMENT AND STAPLE FIBRE ILLUSTRATION
Filament fibres having a practically unlimited or infinite length are called filaments. Filament fibres are continuous (long) fibre. It may be natural like silk or synthetic like Nylon. Filament fibres are measured in yards or meters.
Silk is the filament secreted by the silkworm when spinning its cocoon And the name for the threads, yarns, and fabrics made from the commercial silks products the cultivated silkworm, Bombyx mori, which feeds exclusively on the leaves of certain varieties of mulberry trees
Textile Fibre Overview with links
Yarn is a generic term for a continuous strand spun from a group of natural or synthetic staple fibres, or filaments, used in weaving, knitting to form textile fabrics.