fledge vs nurture

fledge is not a noun while nurture is a noun.

Word	Noun	Adjective	Verb	Adverb
fledge	No	No	Yes	No
nurture	Yes	No	Yes	No

As verbs, nurture is a hypernym of fledge; that is, nurture is a word with a broader meaning than fledge:

Other hypernyms of fledge include bring up, parent, raise, rear.

fledge (noun)	nurture (noun)
	helping someone grow up to be an accepted member of the community
	the properties acquired as a consequence of the way you were treated as a child

fledge (verb)	nurture (verb)
grow feathers	help develop, help grow
decorate with feathers	provide with nourishment
feed, care for, and rear young birds for flight	look after a child until it is an adult