unity vs oneness

unity and oneness both are nouns.

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

As nouns, unity and oneness are synonyms defined as:

unity (noun)	oneness (noun)
the quality of being united into one	the quality of being united into one
the smallest whole number or a numeral representing this number
an undivided or unbroken completeness or totality with nothing wanting