Problem: Sentence1: The "war on drugs" is a campaign against the use of narcotic drugs.
Sentence2: In the US, conservatives rail against the "war on Christmas".
Q: Does the term war mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Show me where the business was today.
Sentence2: They did nearly a million dollars of business over the long weekend.
Q: Does the term business mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Strike coins.
Sentence2: A bullet struck him.
Q: Does the term strike mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Use your head!
Sentence2: Use the plastic bags to store the food.
Q: Does the term use mean the same thing in both these sentences?

Answer:
the same meaning