alcohol vs rice beer

alcohol and rice beer both are nouns.

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

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

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

alcohol (noun)	rice beer (noun)
a liquor or brew containing alcohol as the active agent	Japanese alcoholic beverage made from fermented rice; usually served hot
any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation