Font style refers to the design and appearance of text characters in written communication. It encompasses various attributes such as typeface, size, weight, and slant. Common font styles include serif, which have small lines at the ends of characters, and sans-serif, which do not. Each style can convey different moods or levels of formality in written content. Choosing the right font style is essential for readability and aesthetic appeal. For example, Arial is a popular sans-serif font known for its clean look, while Times New Roman is a classic serif font often used in formal documents. The choice of font can significantly impact how a message is perceived.