Problem: What are the most important words?
large deposits of seaweed on coastal rocks on the coast
Answer: coast, rock, seaweed

Problem: What are the most important words?
lane is closed on the motorway due to the crash
Answer: close, lane, motorway

Problem: What are the most important words?
bunch of ripe black grape on the vine in sunny autumn vineyards before harvest
Answer:
bunch, grape, harvest, vine