amnios vs amnion

amnios and amnion both are nouns.

Word	Noun	Adjective	Verb	Adverb
amnios	Yes	No	No	No
amnion	Yes	No	No	No

As nouns, amnios and amnion are synonyms defined as:

amnios and amnion: thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

Other synonyms of amnios include amniotic sac.

amnios (noun)	amnion (noun)
thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)	thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)