separateness vs other

separateness is a noun but other is not a noun.

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

separateness (noun)	other (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

separateness (adjective)	other (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