To my mind, if we are going to use language precisely (and I believe we should) it is worth noting that the term concentration camp, used by AOC, goes back to the Second Boer War, as Wikipedia notes: "Concentration camps were operated by the British in South Africa during the Second Anglo-Boer War from 1900–1902. The term "concentration camp" grew in prominence during that period." Links:
https://en.wikipedia.org/wiki/Britis...ntration_camps ;
https://en.wikipedia.org/wiki/Intern...nese_Americans
In short, they are not exclusive to the Nazis, the term was already in common use by 1939, and for a reason. If we want an exclusive term, we might say death camps or extermination camps. Not a lot of governments have operated those, but the Nazis obviously did. There is political convenience to be had in blurring this distinction: witness the outcry when AOC labelled the camps on the US border as precisely what they are. I object to that political convenience, and the abuse of language on which it depends. It is immoral, to my mind, and I use the term politely.
Cheers,
John
Update: just to add that the term concentration camp or
Konzentrationslager , used for camps that exterminated people, was quite specifically a Nazi preference. There are good books on Nazi use of language; here's a link to one:
https://en.wikipedia.org/wiki/LTI_%E...Tertii_Imperii
I don't see why we should favor exclusively - to the exclusion of all analogies - the term the Nazis found suited to their ends.