The name of the province Moldova is older than the name Romania.
Romania
To the West of the Republic of Moldova is Romania.
Moldova.
Romania and Ukraine
It's Moldova.
Hungary and Moldova have boundaries with these both countries.
a) Moldova: province in the East of Romania b) Republic of Moldova: independent country at the East of Romania. Ethnically, historically and linguistic this country is also a part of Romania but was occupied by Russians after the world war II. In English we say "Moldavia" for the province/region in Romania, and (The Republic of) "Moldova" for the newly founded country.
Ukraine!!
Moldova
Moldova and Ukraine
Moldova is in the southeastern Europe, between Prut and Dniester (Nistru), but also on the left bank of Dniester. It is bordered by Romania and Ukraine. It was formerly a part of Romania and later occupied by USSR.