delayer vs filibusterer

delayer and filibusterer both are nouns.

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

As nouns, filibusterer is a hyponym of delayer; that is, filibusterer is a word with a more specific, narrower meaning than delayer:

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

Other hyponyms of delayer include filibuster, cunctator, postponer, procrastinator, temporiser, temporizer.

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