amniotic fluid vs amnionic fluid

amniotic fluid and amnionic fluid both are nouns.

Word	Noun	Adjective	Verb	Adverb
amniotic fluid	Yes	No	No	No
amnionic fluid	Yes	No	No	No

As nouns, amniotic fluid and amnionic fluid are synonyms defined as:

amniotic fluid and amnionic fluid: the serous fluid in which the embryo is suspended inside the amnion

Other synonyms of amniotic fluid include waters.

amniotic fluid (noun)	amnionic fluid (noun)
the serous fluid in which the embryo is suspended inside the amnion	the serous fluid in which the embryo is suspended inside the amnion