parent vs fledge

parent is a noun but fledge is not a noun.

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

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

Other hyponyms of parent include cradle, foster.

parent (noun)	fledge (noun)
an organism (plant or animal) from which younger ones are obtained
a father or mother; one who begets or one who gives birth to or nurtures and raises a child; a relative who plays the role of guardian

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