primary vs capital

primary and capital both are nouns.

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

primary (noun)	capital (noun)
a preliminary election where delegates or nominees are chosen	the upper part of a column that supports the entablature
one of the main flight feathers projecting along the outer edge of a bird's wing	one of the large alphabetic characters used as the first letter in writing or printing proper names and sometimes for emphasis
coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit	a seat of government
(astronomy) a celestial body (especially a star) relative to other objects in orbit around it	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

primary (adjective)	capital (adjective)
of first rank or importance or value; direct and immediate rather than secondary	of principal importance
of or being the essential or basic part	first-rate
most important element	uppercase
not derived from or reducible to something else; basic