filibusterer vs legislator

filibusterer and legislator both are nouns.

Word	Noun	Adjective	Verb	Adverb
filibusterer	Yes	No	No	No
legislator	Yes	No	No	No

As nouns, legislator is a hypernym of filibusterer; that is, legislator is a word with a broader meaning than filibusterer:

filibusterer: a legislator who gives long speeches in an effort to delay or obstruct legislation that he (or she) opposes
legislator: someone who makes or enacts laws

Other hypernyms of filibusterer include delayer.

filibusterer (noun)	legislator (noun)
a legislator who gives long speeches in an effort to delay or obstruct legislation that he (or she) opposes	someone who makes or enacts laws