capital

adjective

involving or punishable by death (originally by decapitation): a capital offense
most important or most serious; principal; chief: a capital virtue
of most political importance, as being the seat of government: a capital city
of or having to do with capital, or wealth
first-rate; excellent: a capital idea

noun

capital letter
a city or town that is the official seat of government of a state, nation, etc.
a city where a certain industry, activity, etc. is centered: the rubber capital
wealth (money or property) owned or used in business by a person, corporation, etc.
an accumulated stock of such wealth or its value
wealth, in whatever form, used or capable of being used to produce more wealth
any source of benefit or assistance
capitalists collectively
Accounting
1. the net worth of a business; amount by which the assets exceed the liabilities
2. the face value of all the stock issued or authorized by a corporation