maternity vs physical condition

maternity and physical condition both are nouns.

Word	Noun	Adjective	Verb	Adverb
maternity	Yes	No	No	No
physical condition	Yes	No	No	No

As nouns, physical condition is a hypernym of maternity; that is, physical condition is a word with a broader meaning than maternity:

maternity: the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus
physical condition: the condition or state of the body or bodily functions

Other hypernyms of maternity include physiological condition, physiological state.

maternity (noun)	physical condition (noun)
the quality of having or showing the tenderness and warmth and affection of or befitting a mother	the condition or state of the body or bodily functions
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