Just Call It Rust

I'm not easily triggered but try having several members of your family succumb to the disease and see how you like the casual use of the word.
We watched mama slowly lose her battle from 78 to 84. She gave it a valiant effort, but it still took her when it was over. Use of the word cancer for other things doesn't really bother me. I think it's about spot on for rust, because to metal, that's what it is. Still though, it makes me think.