grid-template-columns vs grid-auto-columns

Hey, what would be the difference between the examples below? Other than the ability to define a specific number of columns and how the elements fill the container when using grid-template-columns, when using auto-fill or auto-fit these both seem like they would achieve the same thing to me? Any explanation would be appreciated, Thanks in advance.
grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
grid-auto-columns: minmax(16rem, 1fr);
Was this page helpful?