furbish vs buff

furbish is not a noun while buff is a noun.

Word	Noun	Adjective	Verb	Adverb
furbish	No	No	Yes	No
buff	Yes	Yes	Yes	No

As verbs, furbish and buff are synonyms defined as:

Other synonyms of furbish include burnish.

furbish (noun)	buff (noun)
	an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)
	a medium to dark tan color
	bare skin
	an ardent follower and admirer
	a soft thick undyed leather from the skins of e.g. buffalo or oxen

furbish (adjective)	buff (adjective)
	of the yellowish-beige color of buff leather

furbish (verb)	buff (verb)
polish and make shiny	polish and make shiny
	strike, beat repeatedly