The document provides examples of words ending in "er", "ar", or "or" and their definitions to demonstrate words with similar final syllables. It lists 20 words in total, including danger, wander, tractor, dollar, harbor, eager, eraser, surrender, solar, sticker, locker, helicopter, pillar, refrigerator, caterpillar, rumor, glimmer, linger, sensor, and alligator. Each word is defined briefly, such as "a powerful motor vehicle used for pulling farm machinery" for tractor and "gossip; hearsay" for rumor.