Problem: What are the most important words?
thousands of locks locked to a bridge by couples in love
Answer: bridge, couple, lock, love

Problem: What are the most important words?
a city across the road this view is from a medieval stone bridge
Answer: bridge, city, road, view

Problem: What are the most important words?
macro panning over wild fungus growing on a tree stump covered in moss
Answer:
grow, moss, stump