—>In most situations, you will be using capital, not capitol. Capitol has a single, specific meaning while capital has several.
—>Capitol is a noun (person, place, or thing) meaning ‘a building or group of buildings in which a state legislative body meets.’
Examples: The capitol is located at the end of the street. The capitol consists of three separate buildings and is always full of politicians.
—>Capital is a noun (person, place, or thing) meaning ‘a seat of government.’
Example: The capital of Arkansas is Little Rock.
—>Capital also means ‘of great importance’ or ‘excellent.’
Examples: We have a capital investment that is starting to pay off. That’s a capital idea! The soldier made a capital error.
—>Capital also means ‘punishable by death,’ ‘involving execution of a person,’ or ‘most serious.’
Examples: His crimes were capital. The country banned capital punishment. The soldier made a capital error.
—>Capital also means ‘relating to financial assets.’
Example: The company’s capital was much higher this quarter.
—>In reference to spelling, capital is used.
Examples: Most capital letters look like larger versions of lowercase letters. The capital version of a is A.