ectopic pregnancy vs extrauterine gestation

ectopic pregnancy and extrauterine gestation both are nouns.

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

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

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

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

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