Final answer:
A horizontal alternation made to remove width in the nape area is known as a taper, a common technique used in hairstyling to create a graded and polished look. This technique can provide a cleaner, more polished look for both short and long hairstyles, and it's particularly useful for managing the bulk of hair in the nape area to create a smoother transition and refined silhouette.
Step-by-step explanation:
A horizontal alternation made to remove width in the nape area is called a taper. When styling hair, a taper is often used by hairdressers or barbers to create a graded effect by gradually decreasing the length of hair from the top to the nape, helping to shape the hair to the head's contour. This technique can provide a cleaner, more polished look for both short and long hairstyles, and it's particularly useful for managing the bulk of hair in the nape area to create a smoother transition and refined silhouette.