What is the clear difference between gdp and gnp?

how can we compare two countries by using the two indicators?

Explanation:

GDP or gross domestic product is a measure of national income produced in a particular country. GNP or gross national product is the account of net income that is received from the abroad. The GDP includes the national income of the country but GNP includes the GDP plus net income obtain from the abroad.

The two indicators can be used to measure and compare the overall health and size of two countries economy. To compare the GDP and GNP of two countries we need to convert the currencies of two distinct countries into common currencies.