One is a superhero and the other is a command.
Your grip.
A cat has nine lives, but a frog croaks every night.
Iron Man is a superhero, Iron Woman is a command.
Ironman is a superhero, Ironwoman is a command.
You command vast powers beyond the scope of smaller minds, but to them all you do is wiggle your fingers and stuff just happens.
Because the commanding officer told his soldiers: "Fire at will"