Problem: What are the most important words?
A series of planes at the airport on a rainy day.
Answer: airport, day, plane

Problem: What are the most important words?
a sign warns visitors to a beach that the area is hazardous due to tides and currents
Answer: area, sign, visitor, warn

Problem: What are the most important words?
A living room with a fireplace and sofas are featured.
Answer:
feature, fireplace, room