one vs oneness

one and oneness both are nouns.

Word	Noun	Adjective	Verb	Adverb
one	Yes	Yes	No	No
oneness	Yes	No	No	No

one (noun)	oneness (noun)
a single person or thing	the quality of being united into one
the smallest whole number or a numeral representing this number

one (adjective)	oneness (adjective)
used of a single unit or thing; not two or more
being a single entity made by combining separate components
(informal) very; used informally as an intensifier
eminent beyond or above comparison
indefinite in time or position
of the same kind or quality
having the indivisible character of a unit