Complex sentence: In German there is only one usual term "Ostdeutschland", meaning East Germany or Eastern Germany, the German rather ambiguous term never gained prevailing use for the GDR as did the English term.
Split into simpler sentences: In German there is only one usual term, "Ostdeutschland", meaning East Germany or Eastern Germany. The rather ambiguous German term never gained prevailing use for the GDR as did the English term.