Sexing refers to determining an organism's biological sex, and while it's a commonly used term, there are several synonyms you can utilize. Some of these are gendering and sexual differentiation. Gendering is the process of classifying an individual according to their gender. In contrast, sexual differentiation refers to the process through which an individual's anatomy and physiology develop in a way that is typical for males or females. Other related terms include demasculinization, feminization, and masculinization. These terms are especially relevant to describing how embryonic development and other genetic and environmental factors affect an organism's sexual characteristics. Regardless of the term used, all of them are crucial for understanding the diversity of the sexes and the vital role they play in shaping the big picture of life.