We Should Give Extinction Risk an Acronym

So what exactly is wrong with x-risk? I feel like it has already been pretty well established?

I think x-risk should remain as meaning extinction risk, but "doom" better encompasses what people refer to when they use x-risk colloquially. Doom encompasses x-risk (extinction risk), any permanent drastic curtailment of potential (permanent stagnation or totalitarian lock-in), and s-risk (suffering risk; fates worse than extinction).

EDIT: I fell prey to the original confusion. x-risk was originally existential risk, which encompasses extinction risk and permanent drastic curtailment of future potential. Perhaps x-risk is better as just extinction risk, and ex-risk should be used for existential risk? Doom is still useful as a broader term for common usage (also including s-risk).

Would be good if OP included a definition of existential risk/x-risk!

I think we should avoid using acronyms where possible. 

It makes sense to occasionally use them when you're abbreviating common phrases or names of organisations that would otherwise be long/unwieldy to say or write in full every time. But too often acronyms just needlessly introduce barriers to understanding.

There's a somewhat standard argument I've heard before that we shouldn't separate these out because they're already covered by existential risks. For example, this is already a complaint lobbied against s-risks since they're a subtype of x-risk. Trying to focus on a subtype seems like mostly a bid to allow something to rise to higher importance than it would otherwise be under standard x-risk framings.

For example, many people try to claim climate change is an extinction risk because fast, significant climate change could cause an extinction event, but that doesn't mean all of life on Earth dies, just that some large percentage of species are wiped out. Existential risk helps keep the lines clear, since climate change is generally not considered an existential risk since plenty of life would be left around after major climate change since that's what's happened in every past instance of major climate change on Earth.

Not having an acronym for extinction risk seems fine then since I think existential risks matter much more, and we should do what we can as EAs to focus on the highest leverage stuff rather than get distracted by things that might kill lots of species but not wipe out all life, since in comparison this is a lower priority type of risk due to lesser impact.