Damask

A one-colour fabric worked by different yarns which create a shiny design on a dull bottom, or the contrary. The term comes from the city in the Minor Asia that was the most important place of trade in the past.   

Darn

To mend a garment by passing long threads through the material and weaving other long threads across and between them to fill in the hole

Darning stitch

It is a simple stitch used for the net embroidery. The thread is passed many times in the holes to fill them. 

Double darning stitch

It is usually made on transparent clothes to enriched the light hatching made with the crossed stitch on the back of the embroidery.

Double running stitch

It is embroidered for cornices or other geometric shapes or  together with other stitches like the cross stitch. It is also known as Holbein stitch; in Tuscany is called Volterra stitch, in Assisi is called Saint Chiara  stitch.