The short form is that Corrode is effectively deprecated in favor of c2rust. Indeed, Corrode hasn't been updated since 2017, while c2rust still gets active development—last commit as of my writing this was 2 days ago.
It's worth noting that the developer of Corrode was consulted on the early design of c2rust, which means c2rust was able to benefit from hindsight on architectural decisions in Corrode. That ended up leading to a bit of a messy history between the two (c.f. https://jamey.thesharps.us/2018/06/30/c2rust-vs-corrode/ with HN discussion https://news.ycombinator.com/item?id=17436371 —although I believe that after that blog post the c2rust developers did end up acknowledging their inspiration and apologized for not doing so earlier.)
It's worth noting that the developer of Corrode was consulted on the early design of c2rust, which means c2rust was able to benefit from hindsight on architectural decisions in Corrode. That ended up leading to a bit of a messy history between the two (c.f. https://jamey.thesharps.us/2018/06/30/c2rust-vs-corrode/ with HN discussion https://news.ycombinator.com/item?id=17436371 —although I believe that after that blog post the c2rust developers did end up acknowledging their inspiration and apologized for not doing so earlier.)