I vs monas

I and monas both are nouns.

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

As nouns, monas is a hyponym of I; that is, monas is a word with a more specific, narrower meaning than I:

I: the smallest whole number or a numeral representing this number
monas: a singular metaphysical entity from which material properties are said to derive

Other hyponyms of I include monad, singleton.

I (noun)	monas (noun)
the 9th letter of the Roman alphabet	a singular metaphysical entity from which material properties are said to derive
the smallest whole number or a numeral representing this number
a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks)