mend vs cobble

mend and cobble both are nouns.

Word	Noun	Adjective	Verb	Adverb
mend	Yes	No	Yes	No
cobble	Yes	No	Yes	No

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

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

mend (noun)	cobble (noun)
the act of putting something in working order again	rectangular paving stone with curved top; once used to make roads
sewing that repairs a worn or torn hole (especially in a garment)

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