The ostrich is the largest bird in the world but cannot fly. Its legs are so strong and long that it can travel faster by running. Ostriches use their wings to help them gather speed when running. They also use them as brakes when turning and stopping.

Ostriches have been known to run at speeds of 60 miles per hour. This is faster than horses and matches the average speed of vehicles on a highway.

These huge birds stand as tall as horses and sometimes weigh as much as 298 pounds. In North Africa, they are often seen with other larger animals.

The zebra, also a fast runner, seems to be one of their favorite companions.

An ostrich egg weighs one pound, as much as two dozen chicken eggs. Ostrich eggs are delicious and are often used for food by people in Africa. The shells are also made into cups and beautiful ornaments.

Which of the following best describes the relationship between the words "break" and "brake" in the passage?