alcohol vs hard cider

alcohol and hard cider both are nouns.

Word	Noun	Adjective	Verb	Adverb
alcohol	Yes	No	No	No
hard cider	Yes	No	No	No

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

alcohol: a liquor or brew containing alcohol as the active agent
hard cider: alcoholic drink from fermented cider; `cider' and `cyder' are European (especially British) usages for the fermented beverage

alcohol (noun)	hard cider (noun)
a liquor or brew containing alcohol as the active agent	alcoholic drink from fermented cider; `cider' and `cyder' are European (especially British) usages for the fermented beverage
any of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillation