Problem: What are the most important words?
A herd of cattle grazing on a forest ground.
Answer: cattle, graze, ground

Problem: What are the most important words?
a row of white thatched cottages by a village green with trees in autumn foliage
Answer: cottage, foliage, row, tree, village

Problem: What are the most important words?
reflection of a temple in water
Answer:
reflection, temple, water