ectopic gestation vs extrauterine pregnancy

ectopic gestation and extrauterine pregnancy both are nouns.

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

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

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

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

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