Edit: At the suggestion of a commenter I am including some definitions for clarity.
Existential Risk (x-risk) [Bostrom's definition]: An existential risk is one that threatens the premature extinction of Earth-originating intelligent life or the permanent and drastic destruction of its potential for desirable future development.
Extinction risk: Future events that threatens the premature extinction of Earth-originating intelligent life.
S-risks: Future events with the potential capacity to produce an astronomical amount of suffering.
I feel like people sometimes use x-risk when they mean extinction risk because they want to use an acronym. Plus it would be nice for extinction risk to have an acronym anyway (if it doesn't already - I did a quick search and couldn't find anything).
Some possible candidates:
- e-risk (obvious choice but could be confusing since existential starts with e)
- d-risk (death, or disappearance)
- a-risk (annihilation)
Feel free to propose a different acronym, or why this is a bad idea.
I don't necessarily think s-risks and extinction risks are strictly subtypes of x-risks (if by subtype you mean subset), although it seems like the community may have a few definitions swirling around for each term.
Does giving something an acronym = trying to focus on? It could explicitly help you focus less on it by clarifying via making it easier to communicate, for example. Even if it adds focus, if it also adds clarity (which it totally may not), there is at least the notion of some tradeoff.
This still seems more important than almost anything else that isn't an x-risk to me. So is the implication here that existential risk is the sole term that gets an acronym? I feel ok about letting the global dev and animal welfare communities have acronyms (conditioning on acronyms being useful) even though one might say they are orders of magnitude less important than x-risk reduction.