A more thorough explanation:

A prison camp is a type of detention facility that is usually reserved for trustworthy prisoners who are deemed low-risk. These camps are often used for government projects and are considered to be minimum-security facilities.

For example, during World War II, the United States government established prison camps for Japanese Americans who were deemed a threat to national security. These camps were located in remote areas and were used to detain individuals who were suspected of being spies or sympathizers.

Another example of a prison camp is the Guantanamo Bay detention camp, which is located in Cuba and is used to detain individuals who are suspected of being terrorists. This camp is operated by the United States government and is considered to be a high-security facility.

Overall, prison camps are used to detain individuals who are considered to be a low-risk to society and are often used for government projects or to detain individuals who are deemed a threat to national security.