What must be true about names in programming according to naming rules?

In programming, names such as variables, functions, and classes must conform to specific naming rules to ensure that the code is syntactically correct and easily understandable. One of the fundamental rules is that names must not be keywords. Keywords are reserved words in a programming language that have a predefined meaning and are part of the language’s syntax. If a programmer tries to use a keyword as a name for a variable or function, it would create ambiguity and errors in the code, as the language interpreter or compiler would not be able to differentiate the intended use of the word.

By not allowing keywords to be used as names, programming languages help maintain clear and functional code structure. This allows programmers to create identifiable and meaningful names without conflicting with the language itself. Therefore, understanding the significance of avoiding keywords is essential for writing valid code in any programming language.