one vs same

one is a noun but same is not a noun.

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

one (noun)	same (noun)
a single person or thing
the smallest whole number or a numeral representing this number

one (adjective)	same (adjective)
used of a single unit or thing; not two or more	closely similar or comparable in kind or quality or quantity or degree
being a single entity made by combining separate components	same in identity
(informal) very; used informally as an intensifier	equal in amount or value
eminent beyond or above comparison	unchanged in character or nature
indefinite in time or position
of the same kind or quality
having the indivisible character of a unit