Diferencia entre circulo y circunferencia

In geometry the terms of circle and circumference are two terms that are confused a lot when using them, some think they are synonymous but not so, are very different things. Here are the exact definitions of each:

-Circle: The circle is the area or flat surface contained within a circumference.

-Circumference: The circumference is a flat, closed curve, whose points are equidistant from another, the center, located in the same plane.

Here we can see a drawing where we clearly see the difference between the circle and the circumference:


Next we put another video in which we see the difference between the circle and the circumference explained in much more detail so that the students can understand it in a better way: https://www.youtube.com/watch?v=ZLLxv_2H6SI