metacyesis vs ectopic gestation

metacyesis and ectopic gestation both are nouns.

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

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

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

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

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