If we change the name of something or the category it belongs to that doesn't mean he underlying thing doesn't exist.
Also, I know what formerly means.
It's the first link that explained the difference I came across.
Wait, do you think people can not have mental retardation? What?
Ok, here Wikipedia instead:
"Mental retardation, also known as intellectual disability, a disorder characterized by significantly impaired cognitive functioning and deficits in adaptive behaviors."
Your snipped links to the page I provided screenshots for and linked to. The one that literally says 'retardation' is considered outdated and offensive. Again, nice try.
Yes. The one I took the snippet from is the first one that opened when I clicked the search result. I didn't know it was outdated as I didn't do a deep dive. I also didn't know retardation got renamed either. Sry, my bad. The term retarded means slow btw. The reason it got a negative connotation is because people used it negatively. I'm fairly certain the word is still widely used and also do I really need to like check like every word before I say it because it may or may not be the official one anymore?