poke fun vs lampoon

poke fun is not a noun while lampoon is a noun.

Word	Noun	Adjective	Verb	Adverb
poke fun	No	No	Yes	No
lampoon	Yes	No	Yes	No

As verbs, lampoon is a hyponym of poke fun; that is, lampoon is a word with a more specific, narrower meaning than poke fun:

Other hyponyms of poke fun include tease, satirise, satirize, debunk, expose, stultify.

poke fun (noun)	lampoon (noun)
	a composition that imitates or misrepresents somebody's style, usually in a humorous way

poke fun (verb)	lampoon (verb)
subject to laughter or ridicule	ridicule with satire