This has already been solved well-enough with AuthN and AuthZ as distinct names.
Never change programming/maths in holding onto terrible naming conventions and making really hard stuff even harder to understand (CQRS anyone?)
words dont really matter all that much. people use them because it makes them sound like they know what it is, and if its important and complex, usually have no clue.
ive seen enough "abac" where the attribute is "your login name"