drink vs sober up

drink is a noun but sober up is not a noun.

Word	Noun	Adjective	Verb	Adverb
drink	Yes	No	Yes	No
sober up	No	No	Yes	No

drink (noun)	sober up (noun)
the act of drinking alcoholic beverages to excess
the act of swallowing
any liquid suitable for drinking
a single serving of a beverage
any large deep body of water

drink (verb)	sober up (verb)
be fascinated or spell-bound by; pay close attention to	become sober after excessive alcohol consumption
take in liquids	become more realistic
consume alcohol
drink excessive amounts of alcohol; be an alcoholic
propose a toast to