What is the main difference between Roman and Italic postures of type?

The main difference between Roman and Italic postures of type lies in their design and visual characteristics. Roman type is typically upright and has a more uniform stroke weight, reflecting classical letterforms with a balanced and formal appearance. In contrast, Italic type features slanted letters with varying stroke weights, often incorporating cursive elements that convey a more dynamic and informal style. This distinction makes Roman type suitable for body text, while Italic is often used for emphasis or stylistic contrast.