The Pencil Sketch app is an app that allows one to turn their photographs into pencil like drawings on either a tablet or smartphone. One can download it from 'Google Play'.
A pencil rubber otherwise known as an eraser is used to rub out pencil marks on paper
You roll over the app and you will see a pencil click on it and remove.
The pencil in sewing is called a "Marking Pencil".
what
one erases pencil marks and the other erases pen ink
sarah ERASED her pencil marks with her eraser
Joseph Priestly.
there is no real satistics to a sudoku so unluky the are many ways to do a sudoku
Sudoku is a noun.
Making marks on paper with pen, pencil or paint.
An eraser