Problem: Sentence1: He sacrificed a piece to get a strategic advantage.
Sentence2: He wrote an interesting piece on Iran.
Q: Does the term piece mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: He earned his degree at Princeton summa cum laude.
Sentence2: There are 360 degrees in a circle.
Q: Does the term degree mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: The ship will call in Honolulu tomorrow.
Sentence2: A transmitter in Samoa was heard calling.
Q: Does the term call mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Civilization presupposes respect for the law.
Sentence2: By law, one is not allowed to own a wallaby in New York City.
Q: Does the term law mean the same thing in both these sentences?

Answer:
the same meaning