Problem: Sentence1: He lived a long and happy life.
Sentence2: Life depends on many chemical and physical processes.
Q: Does the term life mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Take two aspirin and call me in the morning.
Sentence2: I tried to call you all night.
Q: Does the term call mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: A unit of wheat is a bushel.
Sentence2: The dollar is the United States unit of currency.
Q: Does the term unit mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: She was opening her post.
Sentence2: Is there any post for me?
Q: Does the term post mean the same thing in both these sentences?

Answer:
the same meaning