Here's why:
* Language Family: German belongs to the Indo-European language family, specifically the West Germanic branch. Greek belongs to the Indo-European language family, but it's part of the Hellenic branch.
* Origins: The two languages developed independently from distinct Proto-Indo-European dialects.
* Grammar: German and Greek have significantly different grammar structures, including word order, verb conjugation, and noun declension.
* Vocabulary: While some words may share similarities due to their common Indo-European root, the majority of vocabulary is distinct.
Therefore, German and Greek are unrelated languages with their own unique features. They are as different as English and Spanish, or French and Russian.