intake vs drinking

intake and drinking both are nouns.

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

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

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

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

intake (noun)	drinking (noun)
the process of taking food into the body through the mouth (as by eating)	the act of consuming liquids
the act of inhaling; the drawing in of air (or other gases) as in breathing	the act of drinking alcoholic beverages to excess
an opening through which fluid is admitted to a tube or container