Ratiné and bouclé yarns are two types of

 Staple yarns, also called spun yarns, are made of fibers that come in short discrete lengths. All natural fibers except silk are staple fibers. Filament yarns are collections of long continuous filament fibers. Silk is such a fiber, and manufactured fibers are produced in filament form.

Explanation:

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he was  an italian composer who wrote 39 operas, as well as some sacred music, songs, chamber music and piano pieces.

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