The term 'variable' is from mathematics. As others have said, the values of variables do vary but they do not mutate.
Yes, and math has the notion of "free variable" and "bound variable" [1].
[1] https://en.wikipedia.org/wiki/Free_variables_and_bound_varia...
Yes, and math has the notion of "free variable" and "bound variable" [1].
[1] https://en.wikipedia.org/wiki/Free_variables_and_bound_varia...