Problem: What are the most important words?
hipster boys carrying girls on their shoulders at a music festival
Answer: carry, festival, shoulder

Problem: What are the most important words?
A partly eaten hotdog on a bun wrapped in foil.
Answer: bun, eat, hotdog

Problem: What are the most important words?
Two pieces of luggage that are next to a luggage carousel.
Answer:
carousel, luggage, piece