intake vs suck

intake and suck both are nouns.

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

As nouns, suck is a hyponym of intake; that is, suck 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)
suck: the act of sucking

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

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

intake (verb)	suck (verb)
	give suck to
	draw into the mouth by creating a practical vacuum in the mouth
	take in, also metaphorically
	draw something in by or as if by a vacuum
	provide sexual gratification through oral stimulation
	be inadequate or objectionable
	attract by using an inexorable force, inducement, etc.