Variable shadowing

When two variables in higher and lower scopes are given identical names

In computer programming, variable shadowing occurs when a variable declared within a certain scope has the same name as a variable declared in an outer scope. At the level of identifiers, this is known as name masking. This outer variable is said to be shadowed by the inner variable, while the inner identifier is said to mask the outer identifier. This can lead to confusion, as it may be unclear which variable subsequent uses of the shadowed variable name refer to, which depends on the name resolution rules of the language.

This keyword could refer to multiple things. Here are some suggestions: