A same geographic place, the Baltic sea in English, but multiple designations. The Latvian and the Lithuanian people say Baltic sea (in Latvian
This difference in names still exists in our contemporary languages regarding the Baltic sea. It can be surprising when we compare the situation to the Mediterranean sea, which all bordering countries call the same. Indeed the Roman when they settled all around this sea thus united the names. Originally, the Mediterranean was the Big Green (wȝḏ-
Source: article from the Inalco, Région de la mer Baltique une “Méditerranée du Nord” ? by Katerina Kesa