So there's a storage backend called Nix, which is (usually) configured by Nix files containing Nix expression language - which the Nix build tool generated from

So there's a storage backend called Nix, which is (usually) configured by Nix files containing Nix expression language - which the Nix build tool generated from different Nix files written in the Nix domain-specific language? And all of this is used to compose an operating system called NixOS? Maybe people would stop calling everything Nix if the developers were to stop naming everything Nix?