I understand they are not refugee camps as if people were living in tents but even Israel calls them that.
I think this explains it.
It does not. “Refugees/Camp is an incorrect UN designation with political ramifications, whereas Indian reservations are just that. “an area of land held and governed by a U.S. federal government-recognized Native American tribal nation, whose government is semi-sovereign, subject to regulations passed by the United States Congress and administered by the United States Bureau of Indian Affairs, and not to the U.S. state government in which it is located.” (Wiki)