german
The Italian word 'tedesco' is used to refer to anything related to Germany, including its culture, language, and people. It can be used as both an adjective, to describe something as German (e.g., 'cibo tedesco' means 'German food'), and as a noun, to identify a German person (e.g., 'un tedesco' means 'a German').
He speaks German very well.
This phrase indicates that the person is proficient in the German language.
I have a German friend who lives in Berlin.
This sentence expresses that the speaker has a friend from Germany residing in the capital city.
German beer is famous all over the world.
This statement refers to the global reputation of beer brewed in Germany.