Lietuva vs Lithuania

Lietuva and Lithuania both are nouns.

Word	Noun	Adjective	Verb	Adverb
Lietuva	Yes	No	No	No
Lithuania	Yes	No	No	No

As nouns, Lietuva and Lithuania are synonyms defined as:

Lietuva and Lithuania: a republic in northeastern Europe on the Baltic Sea, with capital Vilnius

Other synonyms of Lietuva include Republic of Lithuania.

Lietuva (noun)	Lithuania (noun)
a republic in northeastern Europe on the Baltic Sea, with capital Vilnius	a republic in northeastern Europe on the Baltic Sea, with capital Vilnius