The relationship would be that they both have to do with texes. Like they both take money and bring money in and out!
Gross Pay - The very top number on your paycheck. Your salary or hours multiplied by pay rate.
Net Pay - Gross Pay less everything taken by everyone else. Normally, the "taken" part is restricted to "involuntary" taking. Taxes and things. If you are having a loan payment taken from your paycheck, that doesn't count.
Gross pay and net pay are terms given to your pay before and after deductions. Let’s say you make $10 an hour and worked for 10 hours for 1 week. Your gross pay would be $100. After taxes, deductions for insurance, retirement/401K, etc., let’s say what you had left was $65. What that means is that $65 would be your net pay. “Net pay” is sometimes called “take home pay” because it’s what is left for you after all the necessary subtractions.
I somewhat cheated because I already know what exploit means and it frequents my every day vocabulary.
However you can tell through context clues the answer is to use someone unfairly because the word is referring to how children are being taken advantage of by using them to work for little pay.