partial abortion vs miscarriage

partial abortion and miscarriage both are nouns.

Word	Noun	Adjective	Verb	Adverb
partial abortion	Yes	No	No	No
miscarriage	Yes	No	No	No

As nouns, miscarriage is a hypernym of partial abortion; that is, miscarriage is a word with a broader meaning than partial abortion:

partial abortion: termination of pregnancy without expulsion of all of the products of conception
miscarriage: a natural loss of the products of conception

Other hypernyms of partial abortion include spontaneous abortion, stillbirth.

partial abortion (noun)	miscarriage (noun)
termination of pregnancy without expulsion of all of the products of conception	a natural loss of the products of conception
	failure of a plan