I must admit - this thread is the first time I've read that concentration camps have to be for the express purposes of forced labour or death. whilst most famously associated with the Nazi regime - I never thought they were synonymous either. I'd always learnt that they were invented by the British
*, in the boer war, as camps where "undesirables" are concentrated together and kept under close guard - often (but not always) with deliberately poor health and nutrition in order to make escape harder. Prisons for people who aren't prisoners and haven't undergone due process; or POW camps for people who aren't prisoners of war.
Non-combatant Boer were held in concentration camps - to my knowlegde, no forced labour, no gas chambers.
Non-combatant Japenese Americans were held in concentration camps in the US during WW2 - to my knowledge, no forced labour, no gas chambers.
Latinx asylum seekers are being held in concentration camps right now in the US - unequivocally so IMO
ETA:
Oxford dictionary says: "A place in which large numbers of people, especially political prisoners or members of persecuted minorities, are deliberately imprisoned in a relatively small area with inadequate facilities, sometimes to provide forced labour or to await mass execution."
Cambridge dictionary says: "a place where large numbers of people are kept as prisoners in extremely bad conditions, especially for political reasons"
Miriam-Webster says: "a place where large numbers of people (such as prisoners of war, political prisoners, refugees, or the members of an ethnic or religious minority) are detained or confined under armed guard"
Encyclopaedia Brittanica says: "internment centre for political prisoners and members of national or minority groups who are confined for reasons of state security, exploitation, or punishment, usually by executive decree or military order."
I am failing to see what part of the actual definition these US camps fail to meet (sometimes =/= always)
* - Smithsonian says the Spanish in Cuba beat us to it by 5 years - I would expect some of the crap we pulled in India qualified as well, albeit post-hoc because the term hadn't been invented then.