repulse vs rebuff

repulse and rebuff both are nouns.

Word	Noun	Adjective	Verb	Adverb
repulse	Yes	No	Yes	No
rebuff	Yes	No	Yes	No

As nouns, repulse and rebuff are synonyms defined as:

Other synonyms of repulse include snub.

As verbs, repulse and rebuff are synonyms defined as:

Other synonyms of repulse include drive back, fight off, repel.

repulse (noun)	rebuff (noun)
an instance of driving away or warding off	a deliberate discourteous act (usually as an expression of anger or disapproval)
	an instance of driving away or warding off

repulse (verb)	rebuff (verb)
force or drive back	reject outright and bluntly
cause to move back by force or influence	force or drive back
be repellent to; cause aversion in