foetometry vs fetometry

foetometry and fetometry both are nouns.

Word	Noun	Adjective	Verb	Adverb
foetometry	Yes	No	No	No
fetometry	Yes	No	No	No

As nouns, foetometry and fetometry are synonyms defined as:

foetometry and fetometry: measurement of a fetus (especially the diameter of the head)

foetometry (noun)	fetometry (noun)
measurement of a fetus (especially the diameter of the head)	measurement of a fetus (especially the diameter of the head)