sexual activity vs maternity

sexual activity and maternity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual activity	Yes	No	No	No
maternity	Yes	No	No	No

sexual activity (noun)	maternity (noun)
activities associated with sexual intercourse	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