Bundesrepublik Deutschland (Federal Republic Germany) is the current name and was the name of the western part.
The eastern part was called Deutsche Demokratische Republik (German Democratic Republic)
West (Bundesrepublik Deutschland) and East (Deutsche Demokratische Republik)
Germanys.
What polygon? Your asking "what are two names to describe a polygon" but haven't given a polygon...
Chocolate cake
4.5mm &d Money ,
Bactrian camel, two humps. Dromedary, one hump.
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Whatever names they were given at birth.....
Solar Energy & Nuclear Fussion.
The two names given to a species are its genus name and its specific epithet, which together form its scientific name or binomial name.
There are two names given to describe the same instrument: double bassoon or contrabassoon.
Germany. Faced war on two frontires