Weissbier vs witbier

Weissbier and witbier both are nouns.

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

As nouns, witbier is a hyponym of Weissbier; that is, witbier 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
witbier: a top-fermented barley/wheat beer brewed mainly in Belgium and the Netherlands.

Other hyponyms of Weissbier include Weizenbier, Weizenbock.

Weissbier (noun)	witbier (noun)
a general name for beers made from wheat by top fermentation; usually very pale and cloudy and effervescent	a top-fermented barley/wheat beer brewed mainly in Belgium and the Netherlands.