parental vs parent

parental is not a noun while parent is a noun.

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

parental (noun)	parent (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

parental (adjective)	parent (adjective)
relating to or characteristic of or befitting a parent
designating the generation of organisms from which hybrid offspring are produced

parental (verb)	parent (verb)
	look after a child until it is an adult