Problem: What are the most important words?
hints of autumn along road in mountains featuring cloudy peaks and endless rolling hills
Answer: autumn, feature, hill, peak, road

Problem: What are the most important words?
a beautiful city is reflected in calm waters on another world out in the galaxy
Answer: city, reflect, water

Problem: What are the most important words?
the underside radiating pattern of a mushroom
Answer:
mushroom, pattern, underside