連邦・聯邦|れんぽうrenpou[0]heiban (flat)
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- nounfederation (of states); confederation; commonwealth; union
- SynonymフェデレーションNeutralLoanword for a federation or association of groups, mostly in organization names; Japanese usually says 「連盟」. 「連邦」 leans toward state structure.
- Synonym連邦国家れんぽうこっかWrittenIn written/formal prose, a federal state; more explicit than 「連邦」, which can stand alone, as in 「連邦政府」.
- Antonym単一国家WrittenIn written/formal prose, a unitary state — the opposite of a 「連邦」 formed from multiple states.
Use 「連邦」 for federal states or the federal government, as in 「ロシア連邦」. 「フェデレーション」 appears in organization names (Japanese usually says 「連盟」); 「連邦国家」 explicitly means a federal state; 「単一国家」 is the opposite, a unitary state.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


