furbish up vs cobble

furbish up is not a noun while cobble is a noun.

Word	Noun	Adjective	Verb	Adverb
furbish up	No	No	Yes	No
cobble	Yes	No	Yes	No

As verbs, cobble is a hyponym of furbish up; that is, cobble is a word with a more specific, narrower meaning than furbish up:

furbish up: restore by replacing a part or putting together what is torn or broken
cobble: repair or mend

furbish up (noun)	cobble (noun)
	rectangular paving stone with curved top; once used to make roads

furbish up (verb)	cobble (verb)
restore by replacing a part or putting together what is torn or broken	repair or mend
	pave with cobblestones