This one exactly. But don’t lose hope, the word doesn’t really convey figuratively other than online people who mostly sound foolish trying to push buttons. It is usually used as an emphasis when someone wants to say how close to the actual literal situation things were (even if not literally the same). People who use it as “figuratively” are in decline, kind of like people that throw a fit over “moist” and as long as we keep pointing out how ridiculous they are (both moist dramatics and literal confusers) their relevance will continue to fade.
Yep, that is exactly how it is in the US as well. Each Individual may vary, but the general thrust of their education is as you said, psychiatrists are generally med focused (technically they complete med school and then specialize in psych) and psychologist completes grad school (PhD. or PsyD.) with the focus on psych and learns a bit about meds (since they are likely a big part of the picture for some patients). Psychologist generally can’t prescribe meds (though there are some contexts where they can) and psychiatrists often don’t do therapy (though again exceptions exist). BOTH can and do give official diagnoses, though many healthcare systems are set up with psychologists (or other mental health providers LMFT, LCSW, Etc.) seeing and diagnosing first, with psychiatrists reviewing diagnoses only if prescribing meds.
Another poster mentioned needing a psychiatrist for official diagnoses, and that is false in the US.