maternal vs maternity

maternal is not a noun while maternity is a noun.

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

maternal (noun)	maternity (noun)
	the quality of having or showing the tenderness and warmth and affection of or befitting a mother
	the kinship relation between an offspring and the mother
	the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus

maternal (adjective)	maternity (adjective)
characteristic of a mother
relating to or characteristic of or befitting a parent
relating to or derived from one's mother
related on the mother's side