other vs separateness

other is not a noun while separateness is a noun.

Word	Noun	Adjective	Verb	Adverb
other	No	Yes	No	No
separateness	Yes	No	No	No

other (noun)	separateness (noun)
	the quality of being not alike; being distinct or different from that otherwise experienced or known
	political independence
	the state of being several and distinct

other (adjective)	separateness (adjective)
not the same one or ones already mentioned or implied; quantifier, other
recently past
very unusual; different in character or quality from the normal or expected
belonging to the distant past