waters vs amniotic fluid

waters and amniotic fluid both are nouns.

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

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

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

Other synonyms of waters include amnionic fluid.

waters (noun)	amniotic 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