consume vs drain

consume is not a noun while drain is a noun.

Word	Noun	Adjective	Verb	Adverb
consume	No	No	Yes	No
drain	Yes	No	Yes	No

As verbs, drain is a hyponym of consume; that is, drain is a word with a more specific, narrower meaning than consume:

consume (noun)	drain (noun)
	emptying something accomplished by allowing liquid to run out of it
	a gradual depletion of energy or resources
	a pipe through which liquid is carried away
	tube inserted into a body cavity (as during surgery) to remove unwanted material

consume (verb)	drain (verb)
engage fully	empty of liquid; drain the liquid from
serve oneself to, or consume regularly	make weak
use up (resources or materials)	deplete of resources
spend extravagantly	flow off gradually
eat up completely, as with great appetite
destroy completely