metacyesis vs extrauterine pregnancy

metacyesis and extrauterine pregnancy both are nouns.

Word	Noun	Adjective	Verb	Adverb
metacyesis	Yes	No	No	No
extrauterine pregnancy	Yes	No	No	No

As nouns, metacyesis and extrauterine pregnancy are synonyms defined as:

metacyesis and extrauterine pregnancy: pregnancy resulting from gestation elsewhere than in the uterus

Other synonyms of metacyesis include eccyesis, ectopic gestation, ectopic pregnancy, extrauterine gestation.

metacyesis (noun)	extrauterine pregnancy (noun)
pregnancy resulting from gestation elsewhere than in the uterus	pregnancy resulting from gestation elsewhere than in the uterus