serve up vs plank

serve up is not a noun while plank is a noun.

Word	Noun	Adjective	Verb	Adverb
serve up	No	No	Yes	No
plank	Yes	No	Yes	No

As verbs, plank is a hyponym of serve up; that is, plank is a word with a more specific, narrower meaning than serve up:

serve up (noun)	plank (noun)
	an endorsed policy in the platform of a political party
	a stout length of sawn timber; made in a wide variety of sizes and used for many purposes

serve up (verb)	plank (verb)
provide (usually but not necessarily food)	cook and serve on a plank
	cover with planks
	set (something or oneself) down with or as if with a noise