I want to know about some hair basics

4C hair type refers to one of the most tightly coiled hair textures found within the natural hair type classification system, often used to describe Afro-textured hair. This hair type is characterized by its very tight curls or kinks, with each strand forming tight s-shaped, z-shaped, or coiled patterns. The curls are so tight that they may not always be noticeable unless stretched out. How to tell the difference between 4c and 4b hair?