This is the 10791st most frequent German word.
russe
The German word "Russe" means "Russian" (male).
Here, 'Russe' is used as a noun to refer to a male individual from Russia.
Der Russe trinkt gerne Tee.
The Russian enjoys drinking tea.
In this sentence, 'Russe' is still used as a noun specifically identifying a male from Russia, and it is indefinite.
Eine Russe stand am Bahnhof und wartete.
A Russian man stood at the train station and waited.
In this example, 'russische' derives from the same root word as 'Russe', but it functions as an adjective describing the language.