Problem: What are the most important words?
a black butterfly hovers into focus and lands on a cluster of flowers
Answer: cluster, flower, focus, hover, land

Problem: What are the most important words?
computer generated image of cockpit
Answer: computer, generate, image

Problem: What are the most important words?
silhouette of a witch flying on a broomstick across a full moon at twilight for western christian holiday
Answer:
broomstick, fly, silhouette, witch