ectopic pregnancy vs extrauterine pregnancy

ectopic pregnancy and extrauterine pregnancy both are nouns.

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

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

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

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

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