commerce n.
①商业贸易;
②社交；(意见等的)交流， 交往
a chamber of commerce 商会
have no commerce with 跟...无来往
工商局
Commerce and Industry Bureau?
商业使一个国家富足。
Commerce enriches a nation?

Debt n.债, 债务; 欠款; 恩情;【宗】罪, 罪过, 罪孽
owe a debt 欠债
pay one's debts 偿付债款
clear a debt 还清欠债
debt of gratitude 恩情
in debt 负债
in sb.'s debt 欠某人的债[情]
out of debt 不欠债

indebtedness n.债务;所受的恩惠