1. productivity: producing or tending to produce goods and services having exchange value
2. tariff: a tax on imported goods
3. literacy: ability to read and write
4. artisan: a craftsperson
Productivity is the state or quality of producing something, particularly crops.
Tariff refers to a tax or duty paid on a particular kinds of imports and exports.
Literacy is the capacity to read and write.
An artisan is a skillful buying and selling worker, especially one whose job involves making things by hand.