parental vs maternal

parental and maternal both are adjectives.

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

As adjectives, parental and maternal are synonyms defined as:

parental and maternal: relating to or characteristic of or befitting a parent

Other synonyms of parental include paternal.

parental (adjective)	maternal (adjective)
relating to or characteristic of or befitting a parent	characteristic of a mother
designating the generation of organisms from which hybrid offspring are produced	relating to or characteristic of or befitting a parent
	relating to or derived from one's mother
	related on the mother's side