Problem: What are the most important words?
a shelf holding an esoteric collection of dvds
Answer: collection, hold, shelf

Problem: What are the most important words?
devotees of the shrine take part in a procession celebrating the annual vegetarian festival .
Answer: celebrate, devotee, part, procession, shrine

Problem: What are the most important words?
portion of bark of an old tree covered with green moss
Answer:
bark, cover, tree