Padded satin stitch It is made like the flat stitch, with the difference that it is necessary to prepare a basting that follow the drawing and that will be necessary to give a raised effect to the embroidery.
Piqué A cloth of different fibres with holes on one of its side. The hole is caused by a stretched chain that made the wefts lowered creating a hollow.
Popelin A generic term to describe cotton fabrics (but also wool or rayon) characterised with a typical lining (because the warp is thicker than the weft)
Poplin A fine light fabric with a warp thicker than the weft, usually the warp is in silk and the weft in cotton or wool.