Problem: Sentence1: Does my policy cover accidental loss?
Sentence2: The female covers the eggs.
Q: Does the term cover mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: 200 head of cattle and 50 head of horses.
Sentence2: A head of steam.
Q: Does the term head mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: I doubt these reports.
Sentence2: He doubted that was really what you meant.
Q: Does the term doubt mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: He bought his brother's business.
Sentence2: Business has been slow lately.
Q: Does the term business mean the same thing in both these sentences?

Answer:
different meanings