bigot vs drumbeater

bigot and drumbeater both are nouns.

Word	Noun	Adjective	Verb	Adverb
bigot	Yes	No	No	No
drumbeater	Yes	No	No	No

As nouns, drumbeater is a hypernym of bigot; that is, drumbeater is a word with a broader meaning than bigot:

bigot: a prejudiced person who is intolerant of any opinions differing from his own
drumbeater: a fervent and even militant proponent of something

Other hypernyms of bigot include partisan, zealot.

bigot (noun)	drumbeater (noun)
a prejudiced person who is intolerant of any opinions differing from his own	a fervent and even militant proponent of something