Why is the BBC referring US concentration camps as "internment camps"?
https://www.npr.org/sections/publiceditor/2012/02/10/1466917...
Imprisoning Japanese Americans during WWII was very wrong, but it wasn’t anywhere near the abject horror of Nazi concentration camps.
The words are generally synonyms, but I think the distinction is important.
“Concentration camps” existed before WWII, at least back to the Boer War. The US “internment camps” were concentration camps in the usual historical sense.
In the case of the German exterminatiom camps, “concentration camp” was a euphemism.
The extermination camps were usually next to concentration camps, where the survivors could live to work in the extermination camp. Some of the confusion is that the complexes are called "concentration camp" like Auschwitz which had 40 individual concentration and extermination camps. Probably because the concentration camps came first and exterimination camps were added on.