Weissbier vs Weizenbier

Weissbier and Weizenbier both are nouns.

Word	Noun	Adjective	Verb	Adverb
Weissbier	Yes	No	No	No
Weizenbier	Yes	No	No	No

As nouns, Weizenbier is a hyponym of Weissbier; that is, Weizenbier is a word with a more specific, narrower meaning than Weissbier:

Weissbier: a general name for beers made from wheat by top fermentation; usually very pale and cloudy and effervescent
Weizenbier: a general name in southern Germany for wheat beers

Other hyponyms of Weissbier include Weizenbock, witbier.

Weissbier (noun)	Weizenbier (noun)
a general name for beers made from wheat by top fermentation; usually very pale and cloudy and effervescent	a general name in southern Germany for wheat beers