Fibre is a thin strand of thread twisted to form a yarn. Yarn are the fibres which are twisted or made by the process of spinning. Hope I helped u.. Plz mark as the BRAINLIEST answer..
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 the difference between fibre and yarn is that fibre is (senseid)(countable) a single piece of a given material, elongated and roughly round in cross-section, often twisted with other fibres to form thread while yarn is (uncountable) a twisted strand of fiber used for knitting or weaving. 
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