Simplify the following text for a Grade 6 native English-speaking person.
Original: Starting around the 14th century , the word referred originally to the roughness of woven cloth before it was sheared . When cloth , especially woollen cloth , is woven , the surface of the cloth is not smooth , and this roughness is the nap .
Simplified: In the 14th century , the word described the roughness of woven cloth before it was cut .