commonwealth

commonwealth — noun

1. a group of independent countries that share historical ties and cooperate on pol

1.nounB2
Definition

a group of independent countries that share historical ties and cooperate on political and economic matters. The term most often refers to the Commonwealth of Nations, a voluntary association that grew out of the former British Empire.

Example

Canada and Australia share visa programs and trade benefits as Commonwealth members.

collocation: Commonwealth members / visa programs / trade benefits

Every four years, the Commonwealth Games unite over 5,000 athletes from 70 nations for friendly competition.

collocation: Commonwealth Games / scale: over 5,000 athletes / 70 nations

Common collocations
  • Commonwealth member
  • Commonwealth countries / nations / states
  • Commonwealth Games
  • join the Commonwealth
  • Commonwealth summit
  • Commonwealth secretary-general
  • Commonwealth of Nations
Synonyms
  • alliance

    focuses on a shared goal or agreement rather than historical ties

  • federation

    implies a stronger central government; members of a commonwealth keep full independence

  • union

    broader term; a commonwealth is a specific type of union based on voluntary cooperation

Grammar Patterns

the Commonwealth (proper noun)

a commonwealth of + plural noun (countries/states)

Usage Note

Often capitalized as 'the Commonwealth' when referring to the specific 56-member organization. Member states are fully independent — the Commonwealth is a voluntary association, not a governing body.

Common Mistakes

The commonwealth is a single country with one government.
The Commonwealth is a group of independent countries that choose to work together.
Members keep their own governments and are not ruled by any central power.

2. a nation, territory, or political division whose residents make their own laws t

2.nounB2
Definition

a nation, territory, or political division whose residents make their own laws through elected officials. The term appears in the formal names of four US states (Massachusetts, Pennsylvania, Virginia, Kentucky) and of Puerto Rico, where it signals self-rule within a larger country.

Example

Massachusetts officially calls itself a commonwealth, so state documents and court cases use that title.

official title: Commonwealth of [State] / practical use: documents + courts

Puerto Rico, a US commonwealth, runs its own schools while US defence protects the island.

self-governing commonwealth within a larger nation

Common collocations
  • Commonwealth of Massachusetts / Pennsylvania / Virginia / Kentucky
  • the Commonwealth of Puerto Rico
  • become a commonwealth
  • commonwealth status
  • self-governing commonwealth
Synonyms
  • republic

    emphasises a nation without a monarch; a commonwealth may exist within a monarchy

  • state

    generic term; 'commonwealth' is a specific historical title for certain states

  • self-governing territory

    more precise for territories like Puerto Rico that are not full states

Antonyms
  • colony

    a colony is ruled by an outside power; a commonwealth governs itself

Grammar Patterns

the Commonwealth of [Place Name]

a commonwealth (used as a title for a state or territory)

Usage Note

The term does NOT change a state's legal status — Massachusetts, Pennsylvania, Virginia, and Kentucky are full US states like any other. For Puerto Rico, 'commonwealth' signals local autonomy while remaining under US sovereignty.

Common Mistakes

Massachusetts is a commonwealth, so it is not part of the United States.
Massachusetts is a commonwealth and has been a US state since 1788.
These four states are fully part of the US; 'commonwealth' is simply their official title.

Word family

  • commonwealths
    nounB2
  • commonweal
    nounC2

Synonym discussion

Sense: noun/1

All four terms describe groups of states or countries that cooperate, but they differ in structure and strength of ties. An alliance (e.g., NATO) is typically a temporary agreement for a specific purpose such as defence, whereas a commonwealth is a long-standing association based on shared history and values. A federation (e.g., the United States) has a central government with authority over member states, while Commonwealth members keep full independence. A union can be loose (the European Union) or tight (a political union); the Commonwealth is closer to a loose union. A confederation is even weaker than a federation — the central body has only the powers that members choose to give it. For example, "Switzerland was a confederation before 1848," but "Canada and Australia belong to the Commonwealth by choice, not by law."

alliance ↗federation ↗union ↗confederation

Common collocations

Nouns

Phrases

  • member of a commonwealth
  • head of the Commonwealth
  • Commonwealth of Nations

Prepositions

Etymology

LatinOld FrenchMiddle EnglishEnglish

The word comes from Middle English 'commune welthe', meaning 'the common good' or 'public welfare'. It was formed from 'common' (shared by all) and 'wealth' (well-being), long before it took on a political meaning. By the 1600s it was used to describe a state governed by the people rather than a monarch. In the 20th century, it became the name for the voluntary association of countries that grew out of the British Empire.