waters vs amnionic fluid

waters and amnionic fluid both are nouns.

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

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

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

Other synonyms of waters include amniotic fluid.

waters (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