undo vs unfold

undo and unfold both are verbs.

Word	Noun	Adjective	Verb	Adverb
undo	No	No	Yes	No
unfold	No	No	Yes	No

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

undo (verb)	unfold (verb)
cancel, annul, or reverse an action or its effect	develop or come to a promising stage
cause to become loose	spread out or open from a closed or folded state
remove the outer cover or wrapping of	extend or stretch out to a greater or the full length
deprive of certain characteristics	open to the view
cause the ruin or downfall of