Problem: What are the most important words?
stairs leading from the main floor down to a lower level with wood and tile floors
Answer: floor, lead, level, stair

Problem: What are the most important words?
A train traveling through the countryside next to a herd of grazing sheep.
Answer: herd, sheep, travel

Problem: What are the most important words?
pattern of a flower with colourful tiles at the wall
Answer:
flower, pattern, wall