Moldavia vs Republic of Moldova

Moldavia and Republic of Moldova both are nouns.

Word	Noun	Adjective	Verb	Adverb
Moldavia	Yes	No	No	No
Republic of Moldova	Yes	No	No	No

As nouns, Moldavia and Republic of Moldova are synonyms defined as:

Moldavia and Republic of Moldova: a landlocked republic in eastern Europe; formerly a European soviet but achieved independence in 1991

Other synonyms of Moldavia include Moldova.

Moldavia (noun)	Republic of Moldova (noun)
a landlocked republic in eastern Europe; formerly a European soviet but achieved independence in 1991	a landlocked republic in eastern Europe; formerly a European soviet but achieved independence in 1991