fetology vs midwifery

fetology and midwifery both are nouns.

Word	Noun	Adjective	Verb	Adverb
fetology	Yes	No	No	No
midwifery	Yes	No	No	No

As nouns, midwifery is a hypernym of fetology; that is, midwifery is a word with a broader meaning than fetology:

fetology: the branch of medicine concerned with the fetus in the uterus
midwifery: the branch of medicine dealing with childbirth and care of the mother

Other hypernyms of fetology include OB, obstetrics, tocology.

fetology (noun)	midwifery (noun)
the branch of medicine concerned with the fetus in the uterus	assisting women at childbirth
	the branch of medicine dealing with childbirth and care of the mother