The pencil line is more appropriate for the final line of your clean drawings. Transparent pencil lines may not display the way you want when they overlap: If you sketch a drawing using a semitransparent colour to get a paper-like feel, you should use the Brush tool, as it produces a more realistic and natural feel. You can also convert a brush zone into a pencil line with the Brush Stroke to Pencil Line option.If you draw with the Pencil tool and want to modify the thickness variation, use the Pencil Editor tool.If you draw with the Brush tool and want to modify the thickness variation, use the Contour Editor tool.This means that a pencil line’s control points (used to deform its shape) are located along the length of the central spine, while the Brush line’s control points are located along the contour.
The Pencil and shape tools produce central vector lines. The Brush tool produces contour vector lines. Both tools support pressure sensitivity, allowing you to create lines with variable thickness. The Brush and Pencil tools are used for drawing and sketching.