This is the 142nd most frequent Lithuanian word.
rusijos
"Rusijos" means "of Russia" or "Russia's" (possessive form).
In this example, 'Rusijos' functions again in the genitive case to describe the economy pertaining to Russia.
Rusijos ekonomika yra viena didžiausių pasaulyje.
Russia's economy is one of the largest in the world.
In this sentence, 'Rusijos' denotes possession, meaning 'of Russia' and is used in the genitive case to describe the capital belonging to Russia.
Rusijos sostinė yra Maskva.
Russia's capital is Moscow.
Here, 'Rusijos' still shows possession in the genitive case, specifying the history that pertains to Russia.