rice beer vs intoxicant

rice beer and intoxicant both are nouns.

Word	Noun	Adjective	Verb	Adverb
rice beer	Yes	No	No	No
intoxicant	Yes	Yes	No	No

As nouns, intoxicant is a hypernym of rice beer; that is, intoxicant is a word with a broader meaning than rice beer:

rice beer: Japanese alcoholic beverage made from fermented rice; usually served hot
intoxicant: a liquor or brew containing alcohol as the active agent

Other hypernyms of rice beer include alcohol, alcoholic beverage, alcoholic drink, inebriant.

rice beer (noun)	intoxicant (noun)
Japanese alcoholic beverage made from fermented rice; usually served hot	a drug that can produce a state of intoxication
	a liquor or brew containing alcohol as the active agent

rice beer (adjective)	intoxicant (adjective)
	causing intoxication