Why did the Renaissance use the word "renaissance"? Has the cultural heritage been interrupted?

The Renaissance (Italian: Rinascimento, by Ri-("Re") and nascere ("Birth") [1] was a cultural movement that took place from14th century to17th century, and originated in Florence in the late Middle Ages. The word "Renaissance" can also roughly refer to this historical period, but because the changes it caused are not completely consistent in all parts of Europe, "Renaissance" is only a general term for this period. This cultural movement includes the relearning of classical literature, the development of linear perspective in painting, and the gradual and extensive educational reform. According to the traditional view, this change in knowledge made the Renaissance play a role in connecting the Middle Ages with the modern era. Although the Renaissance triggered revolutions in knowledge, society and politics, it may be famous for its artistic achievements in this period and the contributions of learned scholars such as Leonardo da Vinci and Michelangelo.

The above is Wikipedia's explanation of the Renaissance. Personally, I think "Renaissance" in the Renaissance refers to the improvement and innovation movement in many fields during this period, which is aimed at re-learning the classical literature at that time. I don't know about other fields. When studying the history of western art, we have learned that the painting art, perspective principle and anatomical principle before the Renaissance are almost incorrect or inappropriate compared with today's theory. This is caused by the characteristics of the times at that time, for example, because religion requires people not to dissect the human body casually. But this cannot deny the glory of painting art before the Renaissance. Since the Renaissance, artists began to study the laws of scientific perspective and learn the correct theory of human anatomy, which made the painting art enter another eruption period from the peak before the Renaissance. In other words, the achievements and status before and after the Renaissance are not mutually negated or broken, but a process of sublimation. The word "revival" does not mean denying the former and affirming the latter.