monas vs monad

monas and monad both are nouns.

Word	Noun	Adjective	Verb	Adverb
monas	Yes	No	No	No
monad	Yes	No	No	No

As nouns, monas and monad are synonyms defined as:

monas and monad: a singular metaphysical entity from which material properties are said to derive

monas (noun)	monad (noun)
a singular metaphysical entity from which material properties are said to derive	(biology) a single-celled microorganism (especially a flagellate protozoan)
	a singular metaphysical entity from which material properties are said to derive
	(chemistry) an atom having a valence of one