Problem: What are the most important words?
mangrove roots support trees growing along the edge of a remote island
Answer: edge, island, tree

Problem: What are the most important words?
fonts are a typeface that have those little ears and feet at the end of individual letters .
Answer: font, letter, typeface

Problem: What are the most important words?
a city in port waiting for departure on the island
Answer:
city, island, port