buff vs caramel brown

buff and caramel brown both are nouns.

Word	Noun	Adjective	Verb	Adverb
buff	Yes	Yes	Yes	No
caramel brown	Yes	Yes	No	No

As nouns, buff and caramel brown are synonyms defined as:

Other synonyms of buff include caramel, raw sienna, yellowish brown.

buff (noun)	caramel brown (noun)
an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)	a medium to dark tan color
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

buff (adjective)	caramel brown (adjective)
of the yellowish-beige color of buff leather	having the color of caramel; of a moderate yellow-brown

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