Herr vs German

Herr and German both are nouns.

Word	Noun	Adjective	Verb	Adverb
Herr	Yes	No	No	No
German	Yes	Yes	No	No

Herr (noun)	German (noun)
a German courtesy title or form of address for a man	the standard German language; developed historically from West Germanic
a German man; used before the name as a title equivalent to Mr in English	a person of German nationality

Herr (adjective)	German (adjective)
	of or pertaining to or characteristic of Germany or its people or language