This is the 2722nd most frequent Chinese word.
共和國
"Republic" - a form of government in which power resides with elected representatives and officials.
In this sentence, "共和國" (Republic) is used as part of a proper noun, "中華人民共和國", referring to the People's Republic of China, indicating a state governed with republican principles.
中華人民共和國是世界上人口最多的國家。
The People's Republic of China is the country with the largest population in the world.
Here, "共和國" is a common noun describing a type of state structure, highlighting its governance under republican principles.
法國是一個共和國，採用總統制的政體。
France is a republic that operates under a presidential system.
In this context, "共和國" refers to the concept of a republican form of government, used generically rather than as a specific country's name.