Calque ofRussianсубъектфедерации(subʺjekt federacii).
federalsubject (pluralfederal subjects)
As anaturally potential hypernym above the cohyponyms offederatedstate,federal territory, andfederal district, this English term could logically be used in reference to other federations besides Russia, but idiomatically it usually isn't. Instead, a collocation such asfederatedentity orfederatedadministrative division serves that purpose.
