Problem: What are the most important words?
a green row of fresh crops grow on an agricultural farm field
Answer: crop, field, grow, row

Problem: What are the most important words?
couple buying wine in a supermarket
Answer: buy, couple, supermarket, wine

Problem: What are the most important words?
A man receiving a waxing treatment initially jumps, but then laughs.
Answer:
laugh, receive, wax