Problem: What are the most important words?
i would have loved wearing the fashion of this era
Answer: era, fashion, love

Problem: What are the most important words?
Commuter bullet train traveling on rails next to large waterway.
Answer: rail, train, waterway

Problem: What are the most important words?
silhouette of a man with a light bulb on is head to illustrate the concept of having and idea
Answer:
concept, head, silhouette