filibusterer vs delayer

filibusterer and delayer both are nouns.

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

As nouns, delayer is a hypernym of filibusterer; that is, delayer 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
delayer: a person who delays; to put off until later or cause to be late

Other hypernyms of filibusterer include legislator.

filibusterer (noun)	delayer (noun)
a legislator who gives long speeches in an effort to delay or obstruct legislation that he (or she) opposes	a person who delays; to put off until later or cause to be late