Problem: What are the most important words?
western covered wagon parked in a park
Answer: cover, park, wagon

Problem: What are the most important words?
red squirrel feeding on seeds and nuts while perched on the top of a decaying tree stump
Answer: nut, perch, seed, stump, top

Problem: What are the most important words?
slow motion of a racing car drifting the turn during a race
Answer:
car, race, turn