disprover vs arguer

disprover and arguer both are nouns.

Word	Noun	Adjective	Verb	Adverb
disprover	Yes	No	No	No
arguer	Yes	No	No	No

As nouns, arguer is a hypernym of disprover; that is, arguer is a word with a broader meaning than disprover:

disprover: a debater who refutes or disproves by offering contrary evidence or argument
arguer: someone who engages in debate

Other hypernyms of disprover include debater.

disprover (noun)	arguer (noun)
a debater who refutes or disproves by offering contrary evidence or argument	someone who engages in debate