maternity vs motherhood

maternity and motherhood both are nouns.

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

As nouns, maternity and motherhood are synonyms defined as:

maternity and motherhood: the kinship relation between an offspring and the mother

maternity (noun)	motherhood (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 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