rzeczpospolita

Etymology
..

Noun

 * 1)  republic or commonwealth

Usage notes
The word is nowadays nearly always used in reference to the official name of the Republic of Poland, Rzeczpospolita Polska (abbrev. RP). Other examples: Rzeczpospolita Obojga Narodów literally Commonwealth of Two Nations, but in English more commonly seen as Commonwealth of Poland and Lithuania, Polska Rzeczpospolita Ludowa Polish People's Republic (abbrev. PRL). See Rzeczpospolita for other usages.

Other republics are called in Polish.

Declension
May be declined either as two separate words or as one word with adjectival declension. Both forms are considered correct.

Two-word declension:

One-word declension: