uptake vs drinking

uptake and drinking both are nouns.

Word	Noun	Adjective	Verb	Adverb
uptake	Yes	No	No	No
drinking	Yes	No	No	No

As nouns, drinking is a hyponym of uptake; that is, drinking is a word with a more specific, narrower meaning than uptake:

uptake: the process of taking food into the body through the mouth (as by eating)
drinking: the act of consuming liquids

Other hyponyms of uptake include eating, feeding, deglutition, drink, swallow, suck, sucking, suction, imbibing, imbibition.

uptake (noun)	drinking (noun)
the process of taking food into the body through the mouth (as by eating)	the act of consuming liquids
a process of taking up or using up or consuming	the act of drinking alcoholic beverages to excess