@ghurt3,
I wont lecture you on the evolution of language much less on the dimension of the anthropic boundaries of our conceptual constructs and its innate limitations. Concepts like functions are not infinite in scope, above all they serve a purpose on the ecosystem of human operations and interests Nothingness for instance is just another good example of the vulgar, careless, almost reckless use of language. Why does it succeed one should wonder, right ? Well for the same reason barking can work for dogs...
Free will is a contradiction in terms. When one wills one has reasons, causes to will, there is nothing "free" about it, further, those causes can be traced back to the initial conditions of our Reality. What is it that has no reason, cause, of being ? Just Reality. And even Reality for absence of alternative, or for having all the alternatives computed in a multiverse, is not free, rather its full.