Why is it called gradient descent!

Source: Deep Learning on Medium

ll, if the derivative is always a constant value, can we say that the learnin…ithm, we performed the learning process for neurons. This algorithm consists of a derivative system. When A = c.x is derived from x, we reach c. This means that there is no relationship with x. Well, if the derivative is always a constant value, can we say that the learning process is taking place? Unfortunately no!