Im Blog blog.echoenduring.com gibts eine interessante Übersicht zu Illustrators Pinsel-Werkzeug: an-overview-of-brushes-in-illustrator

… Many types of Photoshop brushes are also used almost like a rubber stamp tool, placing a predefined shape directly onto a layer (though they are certainly more powerful and more versatile than that). In Illustrator, though, brushes are used to stroke paths. …