fetal distress vs foetal distress

fetal distress and foetal distress both are nouns.

Word	Noun	Adjective	Verb	Adverb
fetal distress	Yes	No	No	No
foetal distress	Yes	No	No	No

As nouns, fetal distress and foetal distress are synonyms defined as:

fetal distress and foetal distress: an abnormal condition of a fetus; usually discovered during pregnancy and characterized by an abnormal heart rhythm

fetal distress (noun)	foetal distress (noun)
an abnormal condition of a fetus; usually discovered during pregnancy and characterized by an abnormal heart rhythm	an abnormal condition of a fetus; usually discovered during pregnancy and characterized by an abnormal heart rhythm