intoxicant vs rice beer

intoxicant and rice beer both are nouns.

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

As nouns, rice beer is a hyponym of intoxicant; that is, rice beer is a word with a more specific, narrower meaning than intoxicant:

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

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

intoxicant (adjective)	rice beer (adjective)
causing intoxication