I think that C++ tries to avoid this confusion by not using "method" for the members of a method, so for example it does not define variables inside a method as "method variables" but rather "local variables" so AFAIK C++ has "constant method" as a method that is not allowed to change but it does not�� have or at least I have not seen "method constant' as a variable inside a method that does not change but rather refers to it as "method's local constant variable" while "constant" alone is implying "global constant variable".

In case C++ did define as you said the confusion�� would�� extend even more to what you mention because "method constant" would imply a method local constant variable and not a return type.

As Python zen's states "its better to be explicit than implicit" . Sure long names take more time to type(unless you use auto completion) but they avoid such confusions and the need to take a look at the documentation.