Language Question

So the other day I was bemoaning the loss of the term "safety factor" which for mostly CYA reasons has become "design factor."

This resonated particularly because I had just had a conversation with the Rosebrand rep about how we used to say "fireproof" and not we only say "fire retardant."

I've begun to think there might be the kernel of an article to be written here.

Can any of you think of other terms we used to always use that have since dropped out of favor? To be the same sort of thing I believe that the process involved has to have remained essentially the same, its just the nomenclature which has changed.

Got anything that might fit the bill?