Problem: What are the most important words?
edible mushrooms growing out of the ground in the forest
Answer: ground, grow, mushroom

Problem: What are the most important words?
a black cat places its paws on a toilet in a restroom near a shower curtain.
Answer: curtain, restroom, toilet

Problem: What are the most important words?
reflections of trees in a small pond at afternoon
Answer:
afternoon, reflection, tree