Generally speaking, what are the two types of hand-drawn illustration media?

Art illustrations and business illustrations. Hand-drawn illustration is an essential skill for every painter and designer, which can be divided into artistic hand-drawn illustration and design hand-drawn illustration. Hand-painted illustration media can be divided into artistic illustration and commercial illustration. Illustrators in the Department of Fine Arts pay more attention to the artistic sense of works and emphasize the application of works of art in exhibitions. Commercial illustrations can only serve one commodity or one customer.