gdp

As an adjective reserve

is reserved.

As a noun gdp is

(economics|initialism).

As nouns the difference between gdp and turnover

is that gdp is (economics|initialism) while turnover is the act or result of overturning something; an upset.

As an adjective turnover is

capable of being turned over; designed to be turned over.

As nouns the difference between budget and gdp

is that budget is budget while gdp is (economics|initialism).

As nouns the difference between gdp and wealth

is that gdp is (economics|initialism) while wealth is (obsolete) weal; welfare; prosperity; good; well-being; happiness; joy.

As nouns the difference between gdp and productivity

is that gdp is gross domestic product while productivity is the state of being productive, fertile or efficient.

As a proper noun GOP

is "Grand Old Party", the Republican Party, one of the two major political parties in the United States.

As a noun GDP is

gross domestic product.