extrauterine gestation vs eccyesis

extrauterine gestation and eccyesis both are nouns.

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

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

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

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

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