Difference between public servant and civil servant​

the explantion is my awnser. If im not mistaken this is the diffrence between the two.

Explanation:

Civil service is performed by a civil servant who was  hired by the country's government and works for the public sector. While a public servant is performed by a public servant who is a person appointed by a member of the government and serves the population and also preformes public duties.

explanation:

may i ask what challenges?