embarrass vs filibuster

embarrass is not a noun while filibuster is a noun.

Word	Noun	Adjective	Verb	Adverb
embarrass	No	No	Yes	No
filibuster	Yes	No	Yes	No

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

Other hyponyms of embarrass include stonewall, check, hang, bottleneck.

embarrass (noun)	filibuster (noun)
	(law) a tactic for delaying or obstructing legislation by making long speeches
	a legislator who gives long speeches in an effort to delay or obstruct legislation that he (or she) opposes

embarrass (verb)	filibuster (verb)
cause to be embarrassed; cause to feel self-conscious	obstruct deliberately by delaying
hinder or prevent the progress or accomplishment of