amniotic fluid vs waters

amniotic fluid and waters both are nouns.

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

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

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

Other synonyms of amniotic fluid include amnionic fluid.

amniotic 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