How to Use Capital vs. Capitol (Explained, With Examples)

First published on September 9, 2023 by Dalia Y.|Last revised on October 28, 2025

Capital is the correct word for capital city. Capitol refers to a building or buildings occupied by the state legislature; e.g., the Capitol building in Washington D.C.

How to Use Capital vs. Capitol (Explained, With Examples)

Advertisement

Are you visiting the capital or capitol? These words (and homophones) sound the same and are a single letter off. Still, they're not the same, so make sure to use them correctly (in writing).

Capital vs. capitol: what's the difference?

Capital (with an "a") is the much more common word between the two, and it's probably the spelling you're looking for.

  • As a noun, capital can mean financial assets (e.g., wealth, property or money), the most important city or town in a country where the government is (e.g., Stockholm is the capital city of Sweden), or uppercase letters (e.g., "A", "B").
  • As an adjective, capital describes an offence or crime as liable to the death penalty; i.e., "capital punishment". It can also mean an exclamation similar to "splendid" or "wonderful!" (the latter use is somewhat dated).

Capitol is a noun that refers to the building (or buildings) where politicians meet to work on new laws and policies.

Note that when "capitol" is in capital letters, as in the Capitol building or Capitol Hill, it's used as a proper noun to mention a specific building or place; i.e., the building where the US Congress meets in Washington DC to discuss new laws.

👍🏼 Usage Note

✓ Tokyo is the bustling capital of Japan.

✓ Protesters gathered on the steps of the capitol building.

✗ The senator works in the nation's capital building.

✗ She needed to raise more capitol for her new business.

Definitions and usage

Capital (noun/adjective)

As a noun: financial assets, the most important city where the government is, or uppercase letters. As an adjective: describing an offence as liable to the death penalty (capital punishment).

City:

• Cairo is the capital city of Egypt.

• Los Angeles is the movie capital of the world.

• Washington, D.C., is the capital of the United States.

Uppercase letters:

• Please write using capital letters.

Financial assets:

• Proper allocation of capital is crucial for financial stability.

• The company decided to raise capital by issuing new shares.

Capitol (noun)

A building (or buildings) where politicians meet to work on new laws and policies. When capitalized as "Capitol," it refers specifically to the US Congress building in Washington, D.C.

• Protesters gathered outside the state capitol to voice their concerns about government policies.

• Security measures have been heightened around the capitol in response to recent threats.

• The Capitol Building in Washington, D.C., is an iconic symbol of American democracy.

• The state's capitol building has a rich history and is considered a historic landmark.

Phrases with "capital"

capital punishment capital offence capital gain capital goods social capital venture capital

Synonyms & nearby words

Synonyms for capital

base nucleus locus epicentre axis hub focus core mecca heart seat main primary

Synonyms for capitol

statehouse senate chamber
💡Study Tip

"capital" vs. "Capitol," associate "capital" (with an 'a') with the city, and "Capitol" (with an 'o') with the building.

Word origins

Capital: Early 13c., "of or pertaining to the head," from Old French capital, from Latin capitalis "of the head," hence "capital, chief, first," from caput (genitive capitis) "head".

Capitol: We see the word capitol used with a capital letter in the term Capitol Hill, which is a famous building that houses the seat of the U.S. government in Washington D.C. (the one with the rounded dome on top). Interestingly, Capitol Hill gets its name from the Latin word, Capitolium, which was the name of the temple of Jupiter Optimus Maximus on the Capitoline Hill in ancient Rome.

Practice quiz: Capital or Capitol?

Question 1 of 5

Washington, D.C., is the ______ of the United States.


The lawmakers met in the state ______ to pass new laws.


Austin is the ______ of Texas.


The ______ building is open for tours on weekdays.


A city designated as the seat of government is called a ______.




FAQs

What is the main difference?
Capital (with 'a') refers to the main city (like Washington D.C.), financial assets, or uppercase letters. Capitol (with 'o') is the government building where politicians meet. Capital is the more common word.
When do I use capital?
Use capital (with 'a') as a noun for the most important city (like Washington, D.C.), financial assets (money/wealth), or uppercase letters (A, B). It can also describe death penalty crimes as an adjective.
When do I use capitol?
Use capitol (with 'o') strictly as a noun to refer to the building where politicians meet to create laws and policies, like the state's capitol building or the Capitol Building in Washington, D.C.
Can "capital" refer to a building?
No, according to the post, capital refers to the city, financial assets, or uppercase letters. Using "capital building" is noted as an incorrect use; the correct word for the building is capitol.
Can "capitol" refer to money?
No, the post states that capitol refers to the government building. Using "capitol" when referring to financial assets needed for business is given as an incorrect example; the correct word for financial assets is capital.

Advertisement

Advertisement

Loading articles...