Serif and Sans Serif are two main categories of typefaces used in typography. Serif fonts have small decorative lines or "serifs" at the ends of their letters, which can enhance readability in printed text. Common examples of serif fonts include Times New Roman and Georgia. In contrast, sans serif fonts do not have these decorative lines, giving them a cleaner and more modern appearance. The term "sans" means "without" in French. Popular sans serif fonts include Arial and Helvetica. These fonts are often used for digital content due to their clarity on screens.