"Names of countries" - meaning names of many countries ? i.e. To list the names of countries, Brazil, Singapore, Africa, and America (is the usage correct?)
"name of country" - meaning name of one country? i.e. The name of country is Brazil (is the usage correct?)
"names of country" - meaning multiple names of one country? i.e. The names of country for America is either America or The United States?
"name of countries" - I don't know this one :D
Hope someone could explain those to me. Thanks a lot in advance.