What is Descender?
In typography, the portion of some lowercase letters, such as "g" and "y," extends or descends below the baseline. Line marks the bottom of descenders; is called Descender line.
Ascending and descending are elements of typography that can affect the overall look of your design. Descendants are often reduced to small-print typefaces for uses such as newspapers, directories, or pocket Bibles to fit more text on a single page.
Descendants are reserved for lowercase characters such as g, j, q, p, y, and sometimes f. However, some fonts also use descenders for certain digits (usually 3, 4, 5, 7, and 9). Such numbers are called old-style numbers.