extrauterine gestation vs ectopic pregnancy

extrauterine gestation and ectopic pregnancy both are nouns.

Word	Noun	Adjective	Verb	Adverb
extrauterine gestation	Yes	No	No	No
ectopic pregnancy	Yes	No	No	No

As nouns, extrauterine gestation and ectopic pregnancy are synonyms defined as:

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

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

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