extrauterine gestation vs metacyesis

extrauterine gestation and metacyesis both are nouns.

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

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

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

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

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