coffeepot vs percolator

coffeepot and percolator both are nouns.

Word	Noun	Adjective	Verb	Adverb
coffeepot	Yes	No	No	No
percolator	Yes	No	No	No

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

coffeepot: tall pot in which coffee is brewed
percolator: a coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans

Other hyponyms of coffeepot include drip pot.

coffeepot (noun)	percolator (noun)
tall pot in which coffee is brewed	a coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans