nurture vs fledge

nurture is a noun but fledge is not a noun.

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

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

Other hyponyms of nurture include cradle, foster.

nurture (noun)	fledge (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

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