gravidity vs pregnancy

gravidity and pregnancy both are nouns.

Word	Noun	Adjective	Verb	Adverb
gravidity	Yes	No	No	No
pregnancy	Yes	No	No	No

As nouns, pregnancy is a hypernym of gravidity; that is, pregnancy is a word with a broader meaning than gravidity:

gravidity: technical terms for pregnancy
pregnancy: the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus

Other hypernyms of gravidity include gestation, maternity.

gravidity (noun)	pregnancy (noun)
technical terms for pregnancy	the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus