amnionic fluid vs waters

amnionic fluid and waters both are nouns.

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

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

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

Other synonyms of amnionic fluid include amniotic fluid.

amnionic fluid (noun)	waters (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