superior vs capital

superior and capital both are nouns.

Word	Noun	Adjective	Verb	Adverb
superior	Yes	Yes	No	No
capital	Yes	Yes	No	No

superior (noun)	capital (noun)
a character or symbol set or printed or written above and immediately to one side of another character	the upper part of a column that supports the entablature
one of greater rank or station or quality	one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis
the head of a religious community	a seat of government
a combatant who is able to defeat rivals	a center that is associated more than any other with some activity or product
	wealth in the form of money or property owned by a person or business and human resources of economic value
	assets available for use in the production of further assets

superior (adjective)	capital (adjective)
written or printed above and to one side of another character	of principal importance
of or characteristic of high rank or importance	first-rate
of high or superior quality or performance	uppercase
having an orbit farther from the sun than the Earth's orbit
(sometimes followed by `to') not subject to or influenced by
having a higher rank
(often followed by `to') above being affected or influenced by