clapper vs extoller

clapper and extoller both are nouns.

Word	Noun	Adjective	Verb	Adverb
clapper	Yes	No	No	No
extoller	Yes	No	No	No

As nouns, extoller is a hypernym of clapper; that is, extoller is a word with a broader meaning than clapper:

Other hypernyms of clapper include laudator, lauder.

clapper (noun)	extoller (noun)
metal striker that hangs inside a bell and makes a sound by hitting the side	someone who communicates high praise
a mobile mass of muscular tissue covered with mucous membrane and located in the oral cavity
someone who applauds